Ṣaḥīḥ Muslim is a collection of hadīth compiled by Imām Muslim ibn al-Hajjāj al-Naysāburi His collection is considered to be one of the most authentic collections of the Sunnah of the Prophet, and along with Ṣaḥīḥ al-Bukhārī forms the "Sahihain, " or the "Two Sahihs. " It contains roughly 7500 hadīth in 57 books.