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October 28, 2026 · 7 min read

Hadith Grading Explained for Doubters

If you have doubts about Islam, you have probably met a that troubled you, quoted in a video or a post with the words “it is in the authentic collections”. This guide explains, for a reader who is not a specialist, how Muslim scholars graded hadith, what the grades mean, and what they do not mean. It will help you read a quoted hadith more carefully, whichever way your questions lead.

What a hadith is

A hadith is a report of what the Prophet said, did, or approved. Each report has two parts. The isnad is the chain of people who passed it on: “A told me that B told him that C heard the Prophet say”. The is the text, what was reportedly said or done. Grading is the scholars’ judgement on how likely it is that the text really goes back, through that chain, to the Prophet.

You can see both parts in the first hadith of , “deeds are judged by intentions”. Al-Bukhari heard it from al-Humaydi, who heard it from Sufyan, from Yahya ibn Sa’id al-Ansari, from Muhammad ibn Ibrahim al-Taymi, from ‘Alqama ibn Waqqas, who heard ‘Umar ibn al-Khattab say from the pulpit that he heard the Prophet say it.1 Every name in that list is a person whose life and reliability the hadith critics studied.

The main grades

Sahih (sound). A hadith whose chain is unbroken, whose narrators are all upright and precise in what they transmit, and which is free of hidden defects and of contradiction with stronger reports. This is the highest grade.

Hasan (good). A hadith that meets the conditions of sahih, except that one or more narrators are slightly less precise. A hasan hadith is accepted as evidence by most scholars.

Da’if (weak). A hadith that fails one or more conditions: a break in the chain, a narrator who is unreliable or unknown, or a defect. A weak hadith is not established as the Prophet’s words. Scholars differed over whether weak hadith could be used for encouraging good deeds; they did not use them to establish law or belief.

Mawdu’ (fabricated). A report that the critics judged to be invented and falsely attributed to the Prophet. They compiled whole books of these, so that people would know not to repeat them.

There are many finer terms. A collector may combine grades, as al-Tirmidhi often does. After the hadith “God accepts the repentance of His servant until the death rattle”, for example, al-Tirmidhi writes “this hadith is hasan gharib”, good, and also unusual in its chain.2 Gharib means that at some point in the chain only one narrator carries it. It is a description of the chain, not in itself a criticism: the “intentions” hadith above is carried by one narrator at several of its early links, and it is in both Sahih collections.

How narrators were judged

The grade of a hadith depends above all on its narrators, and the scholars built a discipline to judge them, called al-jarh wa al-ta’dil, criticism and validation. For each narrator they asked two questions. Was he upright, honest and careful in religion, so that he would not knowingly lie? And was he precise, so that what he passed on was what he had heard? A pious man with a poor memory failed the second test, and the critics said so plainly, however much they respected him.

They also asked whether each narrator could actually have met the person he claims to report from: whether their lifetimes and travels overlapped. A chain in which two names never met is broken, however reliable each name is. Biographical dictionaries recording dates, teachers, students and the critics’ verdicts run to many volumes, and they are what make a grading checkable rather than a matter of opinion.

None of this makes the system infallible. It does mean that when a scholar grades a hadith, he is making a claim that other scholars can test against the same evidence, and they often did.

The collections, and what “authentic” means

The two collections of al-Bukhari and Muslim, called the Sahihayn, were compiled with the aim of including only sound hadith, and the scholarly tradition has held them in the highest regard. The four Sunan collections of , al-Tirmidhi, al-Nasa’i and include reports of every grade, and their compilers sometimes note the weakness themselves.

So “it is in Abu Dawud” does not mean “it is sound”. It means “Abu Dawud recorded it”. To know its grade, you need a grading. This site follows the gradings of Muhammad Nasir al-Din al-Albani where scholars differ, because his gradings of the four Sunan are complete and widely available. For example, al-Albani graded sahih Abu Dawud’s narration from ‘A’isha on the three cases in which a Muslim’s blood is lawful, and graded hasan the narration in which the Prophet placed the Torah on a cushion.3

It also does not follow that “it is in al-Bukhari” ends every question. Scholars, including classical scholars such as al-Daraqutni, criticised a small number of reports in the Sahihayn, usually on technical grounds about the chain. Those criticisms are part of the tradition itself. Questions about meaning, about how a sound report is to be understood, remain open even when its chain is secure.

Why gradings sometimes differ

Two scholars can grade the same hadith differently, and this unsettles readers who expected a single answer. The differences have reasons. A scholar may know a supporting chain the other did not consider, which can raise a weak report to hasan. Scholars may judge a particular narrator differently, especially one whose memory declined late in life. And they may weigh an apparent contradiction with a stronger report differently.

Differences in grading are evidence that the system was a working discipline, argued over by people who cared about getting it right. They are not evidence that grading is arbitrary.

When were hadith written down?

A common doubt holds that hadith were only written down two centuries after the Prophet. The great collections were completed in the third Islamic century, but writing began much earlier. ‘Abd Allah ibn ‘Amr reported that he wrote down what he heard from the Prophet, and that the Prophet told him to keep writing, “for nothing comes from it but truth” (Abu Dawud 3646, al-Albani: sahih). This site’s rebuttal hadith and the two centuries gap takes the question further, and the doubt written down centuries later answers it briefly. The companion site’s articles on hadith authenticity and hadith reliability give the longer case.

How to read a hadith that troubles you

When a hadith is quoted at you, ask five questions.

  1. Where is it? Which collection, which number? A quotation without a reference cannot be checked, and some widely quoted “hadith” are not in any collection.
  2. How is it graded? Look for a named grading. If scholars differ, note who said what.
  3. What is the full text? Quotations are often shortened. The full report may include the occasion, a question that prompted it, or a qualification.
  4. Are there other narrations? The same saying often comes in several wordings. The narrations of “the three cases” are an example: one wording speaks of “the one who leaves his religion, abandoning the community”, another of “a man who goes out to fight God and His Messenger”. Reading only one gives a partial picture. Our guide the apostasy penalty shows why this matters.
  5. How did the scholars understand it? A sound chain tells you the report is reliable. It does not tell you what it means or how it was applied; for that, read a commentary.

The doubt hadith contain inhumane things and the rebuttal were monkeys stoned for adultery are worked examples: in the second, a report is shown to be the words of a later narrator, not the Prophet, which changes everything about how it should be read. The companion site discusses selective use of embarrassing reports at more length.

A note on quotations in great books

Great scholars quoted reports in their works for many purposes, and a quotation in a famous book is not a grading. Al-Ghazali’s , for instance, contains many reports of varying strength, and later hadith scholars wrote a whole book tracing and grading them, the Takhrij by al-‘Iraqi. Respecting a scholar does not require treating every report he cites as sound; the scholars themselves did not.

What grading cannot do for you

Grading tells you how reliable a report is. It cannot tell you whether you will find it beautiful or difficult, and it cannot settle a question of faith on its own. A doubt about a hadith can be the start of a long and worthwhile study, or it can be the visible part of a deeper question about whether the Prophet was who Muslims say he was. If it is the second, a grading table will not reach it, and it is better to know that. Our guide how to assess a doubt may help you tell the difference.

Whatever you conclude, you are entitled to the facts about the texts, whichever way they cut. The hadith scholars spent their lives making sure the facts could be checked. That is still the best use of their work.

Sources

  1. Sahih al-Bukhari 1, the chain of 'deeds are judged by intentions'. https://shamela.ws/book/1681/10
  2. Jami' al-Tirmidhi 3537 (ed. Bashshar), Ibn 'Umar: 'God accepts the repentance of His servant until the death rattle'; al-Tirmidhi: hasan gharib. https://shamela.ws/book/7895/5998
  3. Sunan Abi Dawud 4353 (al-Albani: sahih) and 4449 (al-Albani: hasan). https://shamela.ws/book/1726/5996
  4. Sunan Abi Dawud 3646, 'Abd Allah ibn 'Amr: 'Write'. Al-Albani: sahih. https://shamela.ws/book/1726/5044
  5. al-Daraqutni, al-Ilzamat wa al-Tatabbu'. https://shamela.ws/book/21474
  6. al-'Iraqi, Takhrij Ahadith Ihya' 'Ulum al-Din. https://shamela.ws/book/38171
Hadith Authenticity