The Sunnah: equal to the Quran in obligation, not in nature
The authority of the Sunnah does not come from itself but from the Quran, which commands obedience to the Messenger. A reply to the case for following the Quran alone.
tl;dr
- The Quran and the Sunnah are equal in obligation, not equal in nature.
- The authority of the Sunnah does not come from itself, but from the Quran, which repeatedly commands obedience to the Messenger.
- The Quran's sufficiency does not mean it operates without an authorized explainer.
- Treating the Sunnah as binding does not compromise the Quran's completeness; it is the very mechanism the Quran establishes for its application.
why readFor anyone weighing whether the Quran alone is enough, and what the Quran itself says about the Messenger's authority.
The Quran-only case, the argument that the Quran by itself is all a Muslim needs, is a common one, and it runs like this: the Quran is sufficient for salvation, so any additional source is at best optional; the Prophet's role was to deliver the Quran and to live it out as an example, nothing beyond that; and hadith can be helpful, but never authoritative.
If that is your position, this is written to you. It makes the case first, then answers the conclusion that position arrives at, then takes the verses offered as proof one at a time.
I cannot make you believe that the Sunnah matters. I can make the argument for it. After that the choice is yours, and it is clear.
Equal in obligation, not equal in nature
The charge made against this position is blasphemy.
I don't wish to upset anyone, but before labeling something as "blasphemous", it's important to be precise about what is actually being claimed. First, I don't know why this keeps being framed as if the Quran and the Sunnah were being compared as competitors. That framing is an assumption, and I have not seen anyone make such a comparison. The Quran is kalām Allāh, and nothing is comparable to it in divinity, wording, or rank. Nothing. Including the Sunnah. The Sunnah is not ontologically equal to the Quran, and no one is claiming otherwise.
What is being said is something very different: they are equal in obligation, not equal in nature. That distinction matters. The authority of the Sunnah does not come from itself, but from the Quran, which repeatedly commands obedience to the Messenger, acceptance of his judgments, and taking what he gives and refraining from what he forbids. Treating the Sunnah as binding is therefore not elevating it to the level of the Quran; it is obeying the Quran's own instructions. This confuses divine status with binding authority.
The Sunnah is not set beside the Quran as its equal. It is binding because the Quran itself commands obedience to the Messenger.
Obedience as a criterion of faith
Since you say you read the Quran: what are the duties Allah is asking us to do? Allah explains the duties of people and of messengers in the Quran. Here's a question. If we are not following, or at least striving to follow, those duties, then what exactly are we doing? The Quran does not present faith as passive belief or selective acceptance, but as obedience, submission, and commitment to clearly defined duties (سمعنا وأطعنا). So if those obligations are dismissed, minimized, or treated as optional, then the claim of "following the Quran" becomes hollow.
وَيَقُولُونَ ءَامَنَّا بِٱللَّهِ وَبِٱلرَّسُولِ وَأَطَعْنَا ثُمَّ يَتَوَلَّىٰ فَرِيقٌ مِّنْهُم مِّنۢ بَعْدِ ذَٰلِكَ وَمَآ أُو۟لَٰٓئِكَ بِٱلْمُؤْمِنِينَ ٤٧ وَإِذَا دُعُوٓا۟ إِلَى ٱللَّهِ وَرَسُولِهِۦ لِيَحْكُمَ بَيْنَهُمْ إِذَا فَرِيقٌ مِّنْهُم مُّعْرِضُونَ ٤٨ وَإِن يَكُن لَّهُمُ ٱلْحَقُّ يَأْتُوٓا۟ إِلَيْهِ مُذْعِنِينَ ٤٩ أَفِى قُلُوبِهِم مَّرَضٌ أَمِ ٱرْتَابُوٓا۟ أَمْ يَخَافُونَ أَن يَحِيفَ ٱللَّهُ عَلَيْهِمْ وَرَسُولُهُۥ بَلْ أُو۟لَٰٓئِكَ هُمُ ٱلظَّٰلِمُونَ ٥٠ إِنَّمَا كَانَ قَوْلَ ٱلْمُؤْمِنِينَ إِذَا دُعُوٓا۟ إِلَى ٱللَّهِ وَرَسُولِهِۦ لِيَحْكُمَ بَيْنَهُمْ أَن يَقُولُوا۟ سَمِعْنَا وَأَطَعْنَا وَأُو۟لَٰٓئِكَ هُمُ ٱلْمُفْلِحُونَ ٥١47The hypocrites say, “We believe in Allah and in the Messenger, and we obey.” Then a party of them turns away after that. Such are not believers.
48When they are called to Allah and His Messenger so that he may judge between them, a party of them turns away.
49But if the right is in their favor, they come to him in full submission29.
50Is there sickness in their hearts, or do they have doubt, or do they fear that Allah and His messenger will be unjust to them? Rather, it is they who are the wrongdoers.
51As for the believers, when they are called to Allah and His Messenger so that he may judge between them, they say, “We listen and obey.” It is they who are successful.
29 For they care for their own interests and desires, not submission to the right judgment.
وَيَوْمَ يَعَضُّ ٱلظَّالِمُ عَلَىٰ يَدَيْهِ يَقُولُ يَٰلَيْتَنِى ٱتَّخَذْتُ مَعَ ٱلرَّسُولِ سَبِيلًا ٢٧On that Day, the wrongdoer will bite his hands saying, “Would that I had taken a way with the Messenger12!
12 i.e., followed the Prophet (ﷺ).
يَوْمَ تُقَلَّبُ وُجُوهُهُمْ فِى ٱلنَّارِ يَقُولُونَ يَٰلَيْتَنَآ أَطَعْنَا ٱللَّهَ وَأَطَعْنَا ٱلرَّسُولَا۠ ٦٦On the Day when their faces are turned over in the Fire, they will say, “Would that we had obeyed Allah and obeyed the Messenger!”
وَمَن يُشَاقِقِ ٱلرَّسُولَ مِنۢ بَعْدِ مَا تَبَيَّنَ لَهُ ٱلْهُدَىٰ وَيَتَّبِعْ غَيْرَ سَبِيلِ ٱلْمُؤْمِنِينَ نُوَلِّهِۦ مَا تَوَلَّىٰ وَنُصْلِهِۦ جَهَنَّمَ وَسَآءَتْ مَصِيرًا ١١٥But whoever opposes the Messenger after guidance has become clear to him, and follows other than the way of the believers, We will leave him to what he has chosen83, and burn him in Hell84. What a terrible destination!
83 i.e., make him responsible for his choice.
84 See 3:85.
This verse makes it clear that there is already a recognized "way of the believers", and that deliberately departing from it to construct a new, isolated way is not presented as intellectual freedom, but as a dangerous deviation explicitly warned against by Allah.
وَإِذَا قِيلَ لَهُمْ ءَامِنُوا۟ كَمَآ ءَامَنَ ٱلنَّاسُ قَالُوٓا۟ أَنُؤْمِنُ كَمَآ ءَامَنَ ٱلسُّفَهَآءُ أَلَآ إِنَّهُمْ هُمُ ٱلسُّفَهَآءُ وَلَٰكِن لَّا يَعْلَمُونَ ١٣When it is said to them, “Believe as the people have believed,” they say, “Shall we believe as the fools9 have believed?” Indeed, it is they who are the fools, but they do not know.
9 The hypocrites were considering the Companions of the Prophet (ﷺ) to be fools, whereas they themselves were fools.
The call is not to invent a new form of belief, but to align with an existing, recognized model of faith.
The Quran commands obedience to the Messenger many times. Here is one verse:
مَّن يُطِعِ ٱلرَّسُولَ فَقَدْ أَطَاعَ ٱللَّهَ وَمَن تَوَلَّىٰ فَمَآ أَرْسَلْنَٰكَ عَلَيْهِمْ حَفِيظًا ٨٠Whoever obeys the Messenger has indeed obeyed Allah59. But anyone who turns away, We have not sent you [O Prophet] as a keeper over them60.
59 The Prophet (ﷺ) said: “Whoever obeys me has obeyed Allah, and whoever disobeys me has disobeyed Allah”. [Al-Bukhārī: 7137, Muslim: 1835]
60 You are tasked only to convey the message.
Taken together, these verses demonstrate that obedience to the Messenger is a core criterion of true faith in the Quran, not an optional add-on. So before calling this position blasphemous, it is worth asking: is it blasphemy to obey what the Quran itself commands? Or is the real issue a discomfort with the implications of those commands? Obeying the Messenger as Allah instructed is not a comparison with the Quran. It is a consequence of taking the Quran seriously.
أَفِى قُلُوبِهِم مَّرَضٌ أَمِ ٱرْتَابُوٓا۟ أَمْ يَخَافُونَ أَن يَحِيفَ ٱللَّهُ عَلَيْهِمْ وَرَسُولُهُۥ بَلْ أُو۟لَٰٓئِكَ هُمُ ٱلظَّٰلِمُونَ ٥٠Is there sickness in their hearts, or do they have doubt, or do they fear that Allah and His messenger will be unjust to them? Rather, it is they who are the wrongdoers.
In these verses, obeying the Messenger is part of what faith is, not an optional addition to it.
One source of authority, two modes
In Islam, the Quran and the Sunnah share the same source of authority, Allah, only one source, but they differ in their mode of authority. The first mode is the Quran as Allah's direct speech. The second is the application and implementation issued by the one appointed by the lawgiver. Put simply, the Quran is like the constitution, and the Sunnah is the authoritative implementation and application issued by the one the lawgiver appointed. Rejecting it does not honour the constitution. So again, this confuses the source of authority with the modes of authority.
Both carry Allah's authority: the Quran as His speech, the Sunnah as its application by the one He appointed.
The role of the Prophet, from the Quran
Take the role of the Prophet from the Quran rather than assuming it.
Which verse says that? Read these and see whether the second mode exists:
مَّآ أَفَآءَ ٱللَّهُ عَلَىٰ رَسُولِهِۦ مِنْ أَهْلِ ٱلْقُرَىٰ فَلِلَّهِ وَلِلرَّسُولِ وَلِذِى ٱلْقُرْبَىٰ وَٱلْيَتَٰمَىٰ وَٱلْمَسَٰكِينِ وَٱبْنِ ٱلسَّبِيلِ كَىْ لَا يَكُونَ دُولَةًۢ بَيْنَ ٱلْأَغْنِيَآءِ مِنكُمْ وَمَآ ءَاتَىٰكُمُ ٱلرَّسُولُ فَخُذُوهُ وَمَا نَهَىٰكُمْ عَنْهُ فَٱنتَهُوا۟ وَٱتَّقُوا۟ ٱللَّهَ إِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ ٧Whatever gains Allah has bestowed upon His Messenger from the people of the towns belongs to Allah and the Messenger, and to his close relatives8, orphans, the needy, and stranded wayfarers9, so that wealth should not circulate only among those of you who are rich. Whatever the Messenger gives you, accept it, and whatever he forbids you, refrain from it. And fear Allah; indeed, Allah is severe in punishment.
8 Those of Banū Hāshim and Banū Muttalib, the close relatives of the Prophet (ﷺ), as compensation for them being prohibited from accepting zakah.
9 This ruling concerning properties abandoned by disbelievers without engaging in war varies from that in Surat al-Anfāl, verse 41, which refers to spoils of war in which four-fifths is distributed among those believers who participated in the war.
بِٱلْبَيِّنَٰتِ وَٱلزُّبُرِ وَأَنزَلْنَآ إِلَيْكَ ٱلذِّكْرَ لِتُبَيِّنَ لِلنَّاسِ مَا نُزِّلَ إِلَيْهِمْ وَلَعَلَّهُمْ يَتَفَكَّرُونَ ٤٤[We sent them] with clear proofs and scriptures, and We have sent down to you [O Prophet] the Reminder to explain to people what has been sent down to them, and so that they may reflect.
هُوَ ٱلَّذِى بَعَثَ فِى ٱلْأُمِّيِّـۧنَ رَسُولًا مِّنْهُمْ يَتْلُوا۟ عَلَيْهِمْ ءَايَٰتِهِۦ وَيُزَكِّيهِمْ وَيُعَلِّمُهُمُ ٱلْكِتَٰبَ وَٱلْحِكْمَةَ وَإِن كَانُوا۟ مِن قَبْلُ لَفِى ضَلَٰلٍ مُّبِينٍ ٢It is He Who has sent among the unlettered [Arabs] a messenger from among themselves, reciting to them His verses and purifying them, and teaching them the Book and Wisdom [i.e., Sunnah], although before that they were clearly misguided.
وَمَا كَانَ لِمُؤْمِنٍ وَلَا مُؤْمِنَةٍ إِذَا قَضَى ٱللَّهُ وَرَسُولُهُۥٓ أَمْرًا أَن يَكُونَ لَهُمُ ٱلْخِيَرَةُ مِنْ أَمْرِهِمْ وَمَن يَعْصِ ٱللَّهَ وَرَسُولَهُۥ فَقَدْ ضَلَّ ضَلَٰلًا مُّبِينًا ٣٦It is not for a believing man or woman – when Allah and His Messenger have decided a matter – to have any other choice in their matter29. Whoever disobeys Allah and His Messenger has clearly gone astray.
29 i.e., to seek judgment from anyone else, or to have a choice to accept or reject it.
فَلَا وَرَبِّكَ لَا يُؤْمِنُونَ حَتَّىٰ يُحَكِّمُوكَ فِيمَا شَجَرَ بَيْنَهُمْ ثُمَّ لَا يَجِدُوا۟ فِىٓ أَنفُسِهِمْ حَرَجًا مِّمَّا قَضَيْتَ وَيُسَلِّمُوا۟ تَسْلِيمًا ٦٥But no, by your Lord, they will not believe until they accept you [O Prophet] as judge in their disputes, and find no discomfort within their hearts about your judgments, but accept them wholeheartedly.
لَّقَدْ كَانَ لَكُمْ فِى رَسُولِ ٱللَّهِ أُسْوَةٌ حَسَنَةٌ لِّمَن كَانَ يَرْجُوا۟ ٱللَّهَ وَٱلْيَوْمَ ٱلْـَٔاخِرَ وَذَكَرَ ٱللَّهَ كَثِيرًا ٢١Indeed, in the Messenger of Allah you have an excellent example20 for those who look forward to Allah and the Last Day, and remember Allah much.
20 i.e., a role model to be followed.
يَٰٓأَيُّهَا ٱلنَّبِىُّ إِنَّآ أَرْسَلْنَٰكَ شَٰهِدًا وَمُبَشِّرًا وَنَذِيرًا ٤٥ وَدَاعِيًا إِلَى ٱللَّهِ بِإِذْنِهِۦ وَسِرَاجًا مُّنِيرًا ٤٦45O prophet, We have sent you as a witness, a bearer of glad tidings and a warner,
46and a caller to [the way of] Allah by His command, and as a lamp spreading light.
According to the Quran itself, the Prophet is explicitly authorized to explain, teach, clarify, and legislate within the framework of revelation. The Prophet Muhammad (PBUH) does not add new revelation independent of Allah, contradict the Quran, or speak on religion from personal desire.
Instead he is authorized to explain what is concise, to specify what is general, and to apply revelation in real life. That is why in Islam we have bayān (clarification), tafṣīl (detailing) and tashrīʿ (legislation).
The Quran describes the Prophet as one who explains, teaches, judges and legislates within revelation, not only as one who delivers it.
Why adding detail is not altering
The concession usually offered is this.
Conflict and alteration, agreed, that goes without saying. But not addition. Because the Prophet is authorized to explain (bayān) and to legislate, which by definition includes expanding on details not explicitly stated in the text. Where is the proof from the Quran that adding is forbidden?
Take the number of rakʿāt and the details of the prayer, which are not in the text. That is addition. So does that mean the way we pray is wrong? The question raised was what purpose the Sunnah truly serves. I can name many, and I will through this response, but here is one: it defines how we pray in detail, so that no one can come later and say that prayer is in the heart, or that Allah did not specify the rakʿāt, or that the command can be understood in any number of different ways. That is how the pillars of Islam get changed one at a time, and it ends in a totally different religion.
So yes, the Quran explicitly authorizes the Prophet (PBUH) to teach, explain, and issue binding guidance beyond the text itself, because Allah commands us to take whatever the Messenger gives and to refrain from whatever he forbids. That makes the Sunnah a divinely mandated explanation and application of the Quran, not a rival to it.
Detail the Quran does not spell out, such as how to pray, is explanation of the Quran rather than a change to it.
Forbidden food
Another example, forbidden food from the Quran and the Sunnah. The objection rests on a false assumption.
Nowhere in the Quran does it say "Only these foods are forbidden" or "Nothing else can ever be prohibited". That assumption is imported into the text, not derived from it, and that is why I find it false.
مَّآ أَفَآءَ ٱللَّهُ عَلَىٰ رَسُولِهِۦ مِنْ أَهْلِ ٱلْقُرَىٰ فَلِلَّهِ وَلِلرَّسُولِ وَلِذِى ٱلْقُرْبَىٰ وَٱلْيَتَٰمَىٰ وَٱلْمَسَٰكِينِ وَٱبْنِ ٱلسَّبِيلِ كَىْ لَا يَكُونَ دُولَةًۢ بَيْنَ ٱلْأَغْنِيَآءِ مِنكُمْ وَمَآ ءَاتَىٰكُمُ ٱلرَّسُولُ فَخُذُوهُ وَمَا نَهَىٰكُمْ عَنْهُ فَٱنتَهُوا۟ وَٱتَّقُوا۟ ٱللَّهَ إِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ ٧Whatever gains Allah has bestowed upon His Messenger from the people of the towns belongs to Allah and the Messenger, and to his close relatives8, orphans, the needy, and stranded wayfarers9, so that wealth should not circulate only among those of you who are rich. Whatever the Messenger gives you, accept it, and whatever he forbids you, refrain from it. And fear Allah; indeed, Allah is severe in punishment.
8 Those of Banū Hāshim and Banū Muttalib, the close relatives of the Prophet (ﷺ), as compensation for them being prohibited from accepting zakah.
9 This ruling concerning properties abandoned by disbelievers without engaging in war varies from that in Surat al-Anfāl, verse 41, which refers to spoils of war in which four-fifths is distributed among those believers who participated in the war.
This verse explicitly allows additional binding rulings through the Prophet (PBUH).
It does not. A contradiction would be this: the Quran explicitly allows predatory animals and the Sunnah explicitly forbids them. That never happens. What actually happens is that the Quran gives a general food framework and the Sunnah adds specific cases within that framework. This is simply implementing the constitution, by the only person authorized to do so.
For example, contemplate the verse below:
ٱلَّذِينَ يَتَّبِعُونَ ٱلرَّسُولَ ٱلنَّبِىَّ ٱلْأُمِّىَّ ٱلَّذِى يَجِدُونَهُۥ مَكْتُوبًا عِندَهُمْ فِى ٱلتَّوْرَىٰةِ وَٱلْإِنجِيلِ يَأْمُرُهُم بِٱلْمَعْرُوفِ وَيَنْهَىٰهُمْ عَنِ ٱلْمُنكَرِ وَيُحِلُّ لَهُمُ ٱلطَّيِّبَٰتِ وَيُحَرِّمُ عَلَيْهِمُ ٱلْخَبَٰٓئِثَ وَيَضَعُ عَنْهُمْ إِصْرَهُمْ وَٱلْأَغْلَٰلَ ٱلَّتِى كَانَتْ عَلَيْهِمْ فَٱلَّذِينَ ءَامَنُوا۟ بِهِۦ وَعَزَّرُوهُ وَنَصَرُوهُ وَٱتَّبَعُوا۟ ٱلنُّورَ ٱلَّذِىٓ أُنزِلَ مَعَهُۥٓ أُو۟لَٰٓئِكَ هُمُ ٱلْمُفْلِحُونَ ١٥٧those who follow the Messenger – the unlettered Prophet – whose description they find in their Torah and the Gospel. He enjoins them to do what is good and forbids them from what is evil; he makes lawful for them what is pure and makes unlawful for them what is impure; he relieves them of their burden58 and the shackles59 that were on them. So those who believe in him, they honor and support him, and follow the light which is sent down with him – it is they who will be successful.”
58 i.e., difficulties in religious duties.
59 i.e., extreme measures previously required for repentance and retribution without recourse to compensation.
Look carefully at the verbs. These are legal verbs, not descriptive ones. This is delegated legislative authority.
- يأمرهم: he commands them
- ينهاهم: he forbids them
- يحل لهم: he makes lawful for them
- يحرم عليهم: he makes unlawful for them
The Prophet (PBUH) identifies and applies what counts as ṭayyib (pure) and khabīth (impure). The Quran does not list every ṭayyib or khabīth item. That determination is assigned to the Prophet, and not by his own desires. Again, we believe the source of authority for both the Quran and the Sunnah is Allah. That is his Quran-mandated role.
The Quran gives the framework and the Prophet applies it. A ruling the Quran does not list is not a contradiction of it.
The Sunnah as evidence
Another important role of the Sunnah is evidentiary. A prophet, by definition, is not merely a moral teacher but someone who conveys knowledge from the unseen as a sign of divine commissioning. Such prophecies must be true, as their fulfillment serves as proof that the claimant is genuinely sent by the Creator and not merely asserting authority. Within the Sunnah, there are numerous reports concerning future events, past occurrences, and information to which the Prophet Muhammad (PBUH) would have had no ordinary means of access or knowing by his own. The consistency, specificity, and fulfillment of these reports are too numerous to reasonably attribute to coincidence. By their very nature, they provide compelling evidence for sincere skeptics that this person was indeed a messenger of Allah, and they have played, and still play, a role in guiding people toward faith and righteous conduct.
So the Sunnah is what allows people to investigate the claim Prophet Muhammad (PBUH) made, that he is a messenger of God. When people learn about his life, the question they are left with is what else he would have lived that life for, or done what he did, if he was not a messenger of God.
Last words on this. The science of Hadith and Sunnah is a deep and highly developed discipline. Approaching it without foundational knowledge, or through preconceived assumptions that are not actually stated in the Quran, often leads to confusion and misjudgment. A fair assessment requires understanding the methodology on its own terms and recognizing how it operates within the Quranic framework, rather than dismissing it based on misunderstandings or external expectations. Ultimately the choice is yours, but at least the basis for that choice is now clear. Any further position should be taken with full awareness of these methodological considerations.
The Sunnah is also a record that lets anyone test the claim that Prophet Muhammad (PBUH) was sent by Allah.
Answering the Quran-only conclusion
Everything above answers the Quran-only case piece by piece. This is the conclusion that case arrives at, stated as its own holders state it.
That statement is internally inconsistent with the Quran itself, and it rests on several hidden assumptions and fallacies. Seven of them. Each one below states what is being claimed, then why it fails.
First: is that a verse from the Quran, or an interpretation brought to it? The Quran's sufficiency does not mean self-execution. A law can be complete while still requiring an authorized interpreter and applicator. Sufficiency refers to the source, not to the operational mechanism. Otherwise, explain how the Quran states it is sufficient while simultaneously commanding obedience to the Messenger. This is a category mistake, and it would create a contradiction.
Second: set that beside the verses above on the roles of the Prophet (PBUH), and those are not all of the verses in the Quran on the subject. Can you see the contradiction? Which verses support the claim?
Third: this is a false dilemma, and only those two options are ever presented. Neither reflects the model the Quran describes: the Quran as source, the Sunnah as divinely mandated explanation. Could that be a third option that hasn't been considered?
Fourth: this is redefining authority to escape obligation, which is what most people who ignore the Sunnah do. The Quran does not grant the Prophet (PBUH) "helpful" authority. It grants binding authority:
مَّآ أَفَآءَ ٱللَّهُ عَلَىٰ رَسُولِهِۦ مِنْ أَهْلِ ٱلْقُرَىٰ فَلِلَّهِ وَلِلرَّسُولِ وَلِذِى ٱلْقُرْبَىٰ وَٱلْيَتَٰمَىٰ وَٱلْمَسَٰكِينِ وَٱبْنِ ٱلسَّبِيلِ كَىْ لَا يَكُونَ دُولَةًۢ بَيْنَ ٱلْأَغْنِيَآءِ مِنكُمْ وَمَآ ءَاتَىٰكُمُ ٱلرَّسُولُ فَخُذُوهُ وَمَا نَهَىٰكُمْ عَنْهُ فَٱنتَهُوا۟ وَٱتَّقُوا۟ ٱللَّهَ إِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ ٧Whatever gains Allah has bestowed upon His Messenger from the people of the towns belongs to Allah and the Messenger, and to his close relatives8, orphans, the needy, and stranded wayfarers9, so that wealth should not circulate only among those of you who are rich. Whatever the Messenger gives you, accept it, and whatever he forbids you, refrain from it. And fear Allah; indeed, Allah is severe in punishment.
8 Those of Banū Hāshim and Banū Muttalib, the close relatives of the Prophet (ﷺ), as compensation for them being prohibited from accepting zakah.
9 This ruling concerning properties abandoned by disbelievers without engaging in war varies from that in Surat al-Anfāl, verse 41, which refers to spoils of war in which four-fifths is distributed among those believers who participated in the war.
فَلَا وَرَبِّكَ لَا يُؤْمِنُونَ حَتَّىٰ يُحَكِّمُوكَ فِيمَا شَجَرَ بَيْنَهُمْ ثُمَّ لَا يَجِدُوا۟ فِىٓ أَنفُسِهِمْ حَرَجًا مِّمَّا قَضَيْتَ وَيُسَلِّمُوا۟ تَسْلِيمًا ٦٥But no, by your Lord, they will not believe until they accept you [O Prophet] as judge in their disputes, and find no discomfort within their hearts about your judgments, but accept them wholeheartedly.
Authority here is normative, not optional. Calling it "helpful elaboration" contradicts the text. Where is the proof from the Quran for that description? Are you comfortable with the verse?
Fifth: it ignores Quranic commands while claiming Quran-only loyalty. That is selective obedience, not Quran-centrism. It appeals to the Quran against instructions that come directly from the Quran. How does that work?
Sixth: and then it sets aside the preserved records of that model. That creates an impossible situation: you are commanded to follow a model while rejecting the only historical record of it. This is self-defeating.
Seventh: Quran-centrism without the Sunnah would lead to this:
- Every person decides what "Quranic limits" mean
- Prayer, zakah, fasting and law would fragment into the subjective
- No objective mechanism remains
Ironically, this undermines the Quran's authority rather than protecting it.
Last words: The Quran's sufficiency does not mean it operates without an authorized explainer. The Quran explicitly commands obedience to the Messenger, acceptance of his judgments, and taking what he gives and refraining from what he forbids. Reducing the Prophet's role to mere delivery contradicts these verses and turns Quranic commands into empty rhetoric. Treating the Sunnah as binding does not compromise the Quran's completeness; it is the very mechanism the Quran establishes for its application. Much like a constitution is the ultimate source of law in a country, but still requires qualified judges and trained institutions to interpret, apply, and enforce it.
A complete Quran still names an authorized explainer. Setting that explainer aside leaves the Quran's own commands unapplied.
The verses Quran-only readers offer as proof
Finally, the verses themselves. These are the ones Quran-only readers cite to prove that the Quran needs no explainer beside it.
Before I start, the main claim behind all of them.
That assumption is never stated in the Quran. It is an extra premise imported into the text. The Quran repeatedly describes itself as complete while simultaneously commanding obedience to the Messenger, his judgments, and what he gives and forbids. Any interpretation that nullifies those commands is self-contradictory.
Four arguments are built on that premise, and each is taken here in turn: the argument first, then the verses cited for it, then what those verses actually say.
Point 1The Quran claims to be fully detailed and complete
أَفَغَيْرَ ٱللَّهِ أَبْتَغِى حَكَمًا وَهُوَ ٱلَّذِىٓ أَنزَلَ إِلَيْكُمُ ٱلْكِتَٰبَ مُفَصَّلًا وَٱلَّذِينَ ءَاتَيْنَٰهُمُ ٱلْكِتَٰبَ يَعْلَمُونَ أَنَّهُۥ مُنَزَّلٌ مِّن رَّبِّكَ بِٱلْحَقِّ فَلَا تَكُونَنَّ مِنَ ٱلْمُمْتَرِينَ ١١٤[Say], “Should I seek a judge other than Allah when He is the One Who has sent down to you the Book explained in detail?” Those whom We gave the Book know that it has been sent down from your Lord in truth, so never be among those who doubt.
What the verse actually means: Allah alone is the ultimate source of judgment. No rival deity or independent lawgiver exists.
What it does not mean: It does not say Allah does not appoint agents to judge.
It does not negate verses where Allah commands people to:
- Accept the Messenger's judgment (4:65)
- Refer disputes to Allah and the Messenger (4:59)
The Messenger judging by Allah's authority is not "seeking another judge besides Allah". It is obeying Allah's chosen judge. Otherwise, the Quran would contradict itself.
وَمَا مِن دَآبَّةٍ فِى ٱلْأَرْضِ وَلَا طَٰٓئِرٍ يَطِيرُ بِجَنَاحَيْهِ إِلَّآ أُمَمٌ أَمْثَالُكُم مَّا فَرَّطْنَا فِى ٱلْكِتَٰبِ مِن شَىْءٍ ثُمَّ إِلَىٰ رَبِّهِمْ يُحْشَرُونَ ٣٨There is no moving creature on earth or a bird flying with its two wings, but are communities like you. We have missed nothing in the Record10, then to their Lord they will be gathered.
10 i.e., the Preserved Tablet.
The verse does not say "every practical ruling is explicitly written in the Book". That is an inference, not the verse.
The Quran itself acknowledges that explanation is given through the Messenger (16:44):
بِٱلْبَيِّنَٰتِ وَٱلزُّبُرِ وَأَنزَلْنَآ إِلَيْكَ ٱلذِّكْرَ لِتُبَيِّنَ لِلنَّاسِ مَا نُزِّلَ إِلَيْهِمْ وَلَعَلَّهُمْ يَتَفَكَّرُونَ ٤٤[We sent them] with clear proofs and scriptures, and We have sent down to you [O Prophet] the Reminder to explain to people what has been sent down to them, and so that they may reflect.
If the Quran appoints the Messenger as explainer and judge, is that appointment not part of what the Book includes, rather than something outside it? Is it not part of the guidance?
حُرِّمَتْ عَلَيْكُمُ ٱلْمَيْتَةُ وَٱلدَّمُ وَلَحْمُ ٱلْخِنزِيرِ وَمَآ أُهِلَّ لِغَيْرِ ٱللَّهِ بِهِۦ وَٱلْمُنْخَنِقَةُ وَٱلْمَوْقُوذَةُ وَٱلْمُتَرَدِّيَةُ وَٱلنَّطِيحَةُ وَمَآ أَكَلَ ٱلسَّبُعُ إِلَّا مَا ذَكَّيْتُمْ وَمَا ذُبِحَ عَلَى ٱلنُّصُبِ وَأَن تَسْتَقْسِمُوا۟ بِٱلْأَزْلَٰمِ ذَٰلِكُمْ فِسْقٌ ٱلْيَوْمَ يَئِسَ ٱلَّذِينَ كَفَرُوا۟ مِن دِينِكُمْ فَلَا تَخْشَوْهُمْ وَٱخْشَوْنِ ٱلْيَوْمَ أَكْمَلْتُ لَكُمْ دِينَكُمْ وَأَتْمَمْتُ عَلَيْكُمْ نِعْمَتِى وَرَضِيتُ لَكُمُ ٱلْإِسْلَٰمَ دِينًا فَمَنِ ٱضْطُرَّ فِى مَخْمَصَةٍ غَيْرَ مُتَجَانِفٍ لِّإِثْمٍ فَإِنَّ ٱللَّهَ غَفُورٌ رَّحِيمٌ ٣Forbidden5 to you are carrion, blood6, the flesh of swine, and that which is sacrificed to other than Allah; and that which is killed by strangling, or by a violent blow, or by a headlong fall, or by being gored; and that which is partly eaten by a predator unless you slaughter it [before it dies]; and that which is sacrificed to idols. Also it is forbidden to use arrows [of chance]7 to determine your decisions. This is all evil practice. Today the disbelievers have lost all hope in [eliminating] your religion, so do not fear them but fear Me. Today I have perfected your religion for you, completed My favor upon you, and have chosen Islam as your religion. But if anyone is compelled by severe hunger, not intending to sin, then Allah is All-Forgiving, Most Merciful.
5 See 2:173, 5:90.
6 What is unlawful is running blood, not the blood captured in vessels after slaughter.
7 Al-istiqsām bi al-azlām (lit. divining by casting lots): This was an Arab practice before Islam, whereby they had three lots (flat marked pieces of wood) dedicated to divinations. On each there was written either: “My Lord commanded me”, “My Lord forbade me”, or nothing at all. A person would abide by what the lot told him, but if he drew the empty one, he would recast again until he drew either one of the other two. [cf. al-Tabarī, Ibn Kathīr, al-Sa‘dī]
This verse speaks about the completion and perfection of the religion itself, not the cessation of explanation, judgment, or application. Nothing in the verse indicates that the mechanisms by which the religion is lived, taught, and implemented were removed or suspended.
The Quran did not announce the perfection of the religion and then retract the Messenger's role; it perfected the religion with that role fully intact. The Messenger's authority to explain, judge, command, and forbid is part of the completed religious system described by the Quran itself. To claim that the perfection of the religion means the removal of binding Prophetic authority would imply that the Quran perfected the religion and then immediately contradicted itself by its commands of obedience to the Messenger. Such a reading does not follow from the text, and it creates an internal inconsistency that the Quran itself does not support.
Point 2The Quran warns against following any other "statement" (hadith) as divine guidance after it
حمٓ ١ تَنزِيلُ ٱلْكِتَٰبِ مِنَ ٱللَّهِ ٱلْعَزِيزِ ٱلْحَكِيمِ ٢ إِنَّ فِى ٱلسَّمَٰوَٰتِ وَٱلْأَرْضِ لَـَٔايَٰتٍ لِّلْمُؤْمِنِينَ ٣ وَفِى خَلْقِكُمْ وَمَا يَبُثُّ مِن دَآبَّةٍ ءَايَٰتٌ لِّقَوْمٍ يُوقِنُونَ ٤ وَٱخْتِلَٰفِ ٱلَّيْلِ وَٱلنَّهَارِ وَمَآ أَنزَلَ ٱللَّهُ مِنَ ٱلسَّمَآءِ مِن رِّزْقٍ فَأَحْيَا بِهِ ٱلْأَرْضَ بَعْدَ مَوْتِهَا وَتَصْرِيفِ ٱلرِّيَٰحِ ءَايَٰتٌ لِّقَوْمٍ يَعْقِلُونَ ٥ تِلْكَ ءَايَٰتُ ٱللَّهِ نَتْلُوهَا عَلَيْكَ بِٱلْحَقِّ فَبِأَىِّ حَدِيثٍۭ بَعْدَ ٱللَّهِ وَءَايَٰتِهِۦ يُؤْمِنُونَ ٦ وَيْلٌ لِّكُلِّ أَفَّاكٍ أَثِيمٍ ٧ يَسْمَعُ ءَايَٰتِ ٱللَّهِ تُتْلَىٰ عَلَيْهِ ثُمَّ يُصِرُّ مُسْتَكْبِرًا كَأَن لَّمْ يَسْمَعْهَا فَبَشِّرْهُ بِعَذَابٍ أَلِيمٍ ٨1Hā Mīm1.
2The revelation of this Book is from Allah, the All-Mighty, the All-Wise.
3Indeed, there are signs in the heavens and earth for the believers;
4and in your creation and the living creatures that He spreads out, there are signs for people who are certain in faith.
5And in the alternation of the night and day, the provision that Allah sends down from the sky2, reviving thereby the earth after its death, and directing of the winds, there are signs for people of understanding.
6These are the verses of Allah that We recite to you in truth. What message will they believe in after Allah and His verses?
7Woe to every sinful liar,
8who hears the verses of Allah being recited to him, yet he persists in his arrogance, as if he did not hear them. So give him tidings of a painful punishment.
1 See footnote 2:1.
2 i.e., the rain.
وَيْلٌ يَوْمَئِذٍ لِّلْمُكَذِّبِينَ ٤٩ فَبِأَىِّ حَدِيثٍۭ بَعْدَهُۥ يُؤْمِنُونَ ٥٠49Woe on that Day to the deniers!
50In which message after this [Qur’an] will they believe?
There is a linguistic and contextual misreading of these verses. In both 45:6 and 77:50, the word ḥadīth is used in its generic Arabic sense, meaning "speech", "statement", or "discourse", not as a technical term referring to the Prophetic Sunnah. The Quran itself uses the word ḥadīth in this non-technical sense in multiple places, including to describe the Quran itself, as in "Allah has sent down the best ḥadīth" (39:23). Reading these verses as a rejection of the Sunnah therefore imports a later technical meaning into the Quranic text that the text itself does not support.
Contextually, both verses are addressing disbelievers who reject the Quran altogether. The meaning is rhetorical and rebuking: if they refuse to believe in Allah's signs and this revelation, then what discourse or message could possibly convince them? The verses are not addressing believers who accept the Quran already and then seek to understand, apply, and obey it through the Messenger as the Quran commands. This is evident from the broader Quranic framework, which elsewhere repeatedly commands obedience to the Messenger, acceptance of his judgments, and taking what he gives and refraining from what he forbids. Interpreting these verses as a prohibition of following the Messenger's guidance would therefore place them in direct conflict with numerous other Quranic commands, as mentioned before.
For this reason, the assertion that the word ḥadīth here refers to any teaching besides the Quran, including the Sunnah, is textually and contextually unsound. These verses do not warn against divinely authorized explanation or application of revelation; they warn against rejecting the Quran and then chasing other narratives in its place. Reading them as a rejection of Prophetic authority requires isolating the verses from their context and ignoring how the Quran consistently describes the role of the Messenger within its own guidance system.
Point 3The Quran criticizes those who elevate non-revealed teachings to divine status
ٱتَّخَذُوٓا۟ أَحْبَارَهُمْ وَرُهْبَٰنَهُمْ أَرْبَابًا مِّن دُونِ ٱللَّهِ وَٱلْمَسِيحَ ٱبْنَ مَرْيَمَ وَمَآ أُمِرُوٓا۟ إِلَّا لِيَعْبُدُوٓا۟ إِلَٰهًا وَٰحِدًا لَّآ إِلَٰهَ إِلَّا هُوَ سُبْحَٰنَهُۥ عَمَّا يُشْرِكُونَ ٣١They have taken their rabbis and monks as lords29 besides Allah, as well as the Messiah, son of Mary, even though they were commanded to worship only One God; none has the right to be worshiped except Him, glorified is He far above what they associate with Him30.
29 By obeying them rather than obeying Allah’s commandments.
30 ‘Adiyy ibn Hātim al-Tā’iyy (رضي الله عنه), who was Christian before embracing Islam, narrated that he came to the Messenger (ﷺ) while he was reciting this verse, and he said to the Messenger: “We do not worship them!” He asked: “Do they not deem unlawful what Allah allowed and you follow them making it unlawful, and declare lawful what Allah forbade and you follow them making it lawful?” ‘Adiyy said: “Indeed!” then he (ﷺ) said: “That is their worship!” [At-Tirmidhī: 3095; also see: Matthew 15:1-9, Isaiah 29:13, Jeremiah 8:8]
The verse is condemning a specific behavior: people granting human authorities independent legislative power that overrides or contradicts God's commands. It is not condemning obedience itself, nor the existence of divinely authorized guidance conveyed through a messenger. The problem identified in the verse is not following scholars, but treating them as sources of law apart from Allah.
This meaning becomes clear when the verse is read within the Quranic framework. The Quran repeatedly distinguishes between obedience that is commanded by Allah and obedience that replaces or competes with Allah. In the case of the scholars and monks mentioned in 9:31, they were obeyed in making lawful what Allah had made unlawful and unlawful what Allah had made lawful, effectively usurping divine authority. This is fundamentally different from obeying the Messenger, whose authority the Quran explicitly grounds in Allah's command. Obedience to the Messenger is never presented as an alternative to Allah's authority, but as an expression of it.
Therefore, using this verse to argue against following the Sunnah involves a false equivalence. The Quran condemns elevating human opinions to divine status when they contradict revelation. It does not condemn obeying a messenger who is authorized by Allah to explain, judge, command, and forbid within the bounds of revelation. Interpreting 9:31 as a rejection of Prophetic authority ignores the Quran's own repeated insistence that obeying the Messenger is obedience to Allah, and it collapses a clear distinction the Quran itself maintains between illegitimate human legislation and divinely mandated guidance.
Point 4The Quran presents itself as the sole criterion (Furqan) and final authority
تَبَارَكَ ٱلَّذِى نَزَّلَ ٱلْفُرْقَانَ عَلَىٰ عَبْدِهِۦ لِيَكُونَ لِلْعَٰلَمِينَ نَذِيرًا ١Blessed is the One Who has sent down the Criterion to His slave, so that he may be a warner to the worlds1,
1 i.e., both men and jinn.
It is hard to see how this point helps the argument.
The claim itself is misplaced. The Quran being the Criterion (Furqan) does not mean it excludes any divinely authorized role. The Quran explicitly defines those roles. It tells you to obey the Messenger, it assigns the Messenger authority to judge, explain, command, and forbid, and it assigns believers the duty to accept and submit to that judgment. There is no claim anywhere in the Quran that the Criterion operates without an authorized messenger, nor that obedience to the Messenger contradicts the Quran's authority. On the contrary, the Quran makes obedience to the Messenger part of obedience to Allah himself. So the question is not where the Sunnah contradicts the Quran, but where the Quran ever claims that its role as Furqan negates the Messenger's binding authority. That claim simply is not found in the text.
None of these verses says the Quran works without the Messenger. Read in context, each leaves his authority intact.
Quran text from the Tanzil Project (tanzil.net), Uthmani edition. English translation by the Rowwad Translation Center, version 1.0.19, from QuranEnc.com.
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