What Is the Sunnah and Hadith? How Muslims Know the Prophet's Teachings

Short answer: The Sunnah is the way of the Prophet Muhammad ﷺ — his words, actions and approvals. A hadith is a reported narration that records part of that Sunnah. Together with the Quran, the Sunnah is the second source of Islamic guidance, because the Quran commands Muslims to obey the Messenger (Quran 4:59, 59:7) and calls him the best example (33:21).

If you are new to Islamic sources, first read What Is the Quran? and then return here.

Sunnah vs hadith: what's the difference?

• Sunnah is the lived practice itself — how the Prophet ﷺ prayed, ate, treated family, traded and taught.
• Hadith is the transmitted report of that practice, with a chain of narrators (isnad) and text (matn).

In everyday speech, Muslims often use the words interchangeably. Note also that in fiqh, "sunnah" can mean a recommended act — context tells you which meaning is intended.

Roman Urdu note: Sunnat Nabi ﷺ ka tareeqa hai; hadith us tareeqe ki riwayat hai.

Why can't Muslims follow the Quran alone?

The Quran itself assigns the Prophet ﷺ the role of explaining it (16:44). The Quran commands salah, but the details of how to pray come from the Sunnah: "Pray as you have seen me pray" (Bukhari 631). The same is true of zakat amounts, Hajj rites and much more. Rejecting the Sunnah makes it impossible to practise much of the Quran. See how prayer works in Why Muslims Pray Five Times a Day.

How were hadith preserved?

• Memorisation and practice by companions who lived with the Prophet ﷺ.
• Early writing: some companions, such as 'Abdullah ibn 'Amr, wrote hadith during the Prophet's lifetime (Abu Dawud 3646).
• The isnad system: every report carries a chain of named narrators. Scholars studied the biography, memory and honesty of thousands of narrators ('ilm al-rijal).
• Compilation: in the 2nd–3rd Islamic centuries, scholars compiled major collections, travelling vast distances to verify single narrations.

This methodology is one of the most detailed systems of historical verification produced by any civilisation.

How are hadith graded?

• Sahih (authentic): continuous chain of trustworthy, precise narrators, without hidden defect or contradiction.
• Hasan (good): like sahih, but a narrator's precision is slightly lower.
• Da'if (weak): a missing link or a narrator with weakness.
• Mawdu' (fabricated): forged; must not be attributed to the Prophet ﷺ.

The Prophet ﷺ warned: "Whoever lies about me deliberately, let him take his seat in the Fire" (Bukhari 110). This is why we always link our references to sunnah.com with collection and number.

The major hadith collections

The six most famous Sunni collections (al-Kutub al-Sittah) are Sahih al-Bukhari, Sahih Muslim, Sunan Abu Dawud, Jami' al-Tirmidhi, Sunan al-Nasa'i and Sunan Ibn Majah. Bukhari and Muslim are considered the most authentic books after the Quran. The Muwatta of Imam Malik and the Musnad of Imam Ahmad are also foundational.

Using hadith responsibly in da'wah

• Cite properly: collection + number, and check grading.
• Avoid weak or viral "hadith" on social media without verification — see Common Mistakes in Da'wah.
• Explain context: many misunderstood narrations become clear with scholarly explanation.
• Live the Sunnah: good character is the strongest proof — read Islamic Akhlaq in Da'wah.

Continue learning in our structured da'wah modules and the Q&A library.

Frequently asked questions

Is the Sunnah revelation? Muslims believe the Prophet ﷺ spoke from guidance given by Allah ([Quran 53:3–4](https://quran.com/53/3-4)), so the Sunnah carries authority, though its wording is not the Quran.

What is a hadith qudsi? A hadith in which the Prophet ﷺ relates words from Allah, but which is not part of the Quran.

How many hadith are in Sahih al-Bukhari? Roughly 7,500 with repetitions and around 2,600 without, depending on how they are counted.

Can weak hadith be used? Scholars differ; many allow weak hadith only for encouraging good deeds with conditions, never for beliefs or rulings, and never presented as certain.