The Canonical Hadith Collections

Each major tradition gathered its hadith into a set of authoritative collections — the Sunni "Six Books" and the Twelver Shiʿi "Four Books" — which frame how reports are cited and weighed.

At a glance

In Sunni Islam the six collections known as al-Kutub al-Sitta hold pride of place: the Ṣaḥīḥ of al-Bukhārī and the Ṣaḥīḥ of Muslim — together the Ṣaḥīḥayn, regarded in Sunni scholarship as the most rigorously authenticated — followed by the four Sunan of Abū Dāwūd, al-Tirmidhī, al-Nasāʾī and Ibn Māja. (The place of Ibn Māja as the "sixth" book was itself long debated, some early lists preferring Mālik's Muwaṭṭaʾ or the Sunan of al-Dārimī.) A frequent confusion concerns numbers: al-Bukhārī's Ṣaḥīḥ contains on the order of seven thousand entries counting repetitions, but only about two thousand six hundred distinct reports once repetitions are set aside. The high standing of the Ṣaḥīḥayn is a Sunni position; it does not bind other traditions, and Sunni scholars themselves have recorded limited technical critiques of particular reports.

Twelver Shiʿi Islam looks to its own four foundational compilations, al-Kutub al-Arbaʿa: al-Kāfī of al-Kulaynī, Man lā yaḥḍuruhu al-faqīh of al-Ṣadūq, and the Tahdhīb and al-Istibṣār of al-Ṭūsī. These give particular weight to reports transmitted from the Imams. Importantly, Twelver scholarship does not treat every report in the four books as authenticated; building on the earlier rijāl literature of scholars such as al-Najāshī and al-Ṭūsī, a later systematic grading movement associated with al-ʿAllāma al-Ḥillī and, afterwards, al-Majlisī applied narrator criticism to sort them — so "in the Four Books" is not, in Shiʿi usage, equivalent to "ṣaḥīḥ."

Other communities keep other canons: the Zaydīs and the Ibāḍīs of Oman each preserve their own principal collections (among them the Ibāḍī al-Jāmiʿ al-Ṣaḥīḥ, or Musnad, associated with al-Rabīʿ ibn Ḥabīb, though its attribution and later redaction are debated). Across all of them, the collections are the raw material on which the sciences of hadith operate, and the authority assigned to any given book is itself a matter on which the traditions differ — which is why Chronicle names the collection and grade rather than presenting any report as beyond question.

Related in Chronicle

Curated reference on Islamic belief and thought. On matters where traditions differ, positions are attributed rather than adjudicated; verify points of doctrine with qualified scholars.