Kulaynī, Muḥammad ibn Yaʻqūb, -941? Kāfī

Al-Kafi (Arabic: ٱلْكَافِي, al-Kāfī, literally 'The Sufficient') is a hadith collection of the Twelver Shī‘ah tradition, compiled in the first half of the 10th century CE (early 4th century AH) by Muḥammad ibn Yaʿqūb al-Kulaynī. It is one of the Four Books. It is divided into three sections: Uṣūl al-Kāfī, dealing with epistemology, theology, history, ethics, supplication, and the Qurʾān; Furūʿ al-Kāfī, which is concerned with practical and legal issues; and Rawdat (or Rawḍah al-Kāfī, which includes miscellaneous traditions, many of which are lengthy letters and speeches transmitted from the imams. In total, al-Kāfī comprises 16,199 narrations.