The Four Books
The Four Books The Four Books (ٱلْكُتُب ٱلْأَرْبَعَة, al-Kutub al-ʾArbaʿah), or The Four Principles (al-Uṣūl al-Arbaʿah), is a Twelver Shia term referring to their four best-known hadith collections: Name Collector No. of hadith Kitab al-Kafi Muhammad ibn Ya’qub al-Kulayni al-Razi (329 AH) 16,199 Man La Yahduruhu al-Faqih Muhammad ibn Babawayh 9,044 Tahdhib al-Ahkam Shaykh Muhammad Tusi 13,590 Al-Istibsar Shaykh Muhammad...