Muhammad ibn Ya'qub al-Kulayni

Abū Jaʿfar Muḥammad ibn Yaʿqūb ibn Isḥāq al-Kulaynī ar-Rāzī (محمد بن یعقوب بن اسحاق کلینی رازی; أَبُو جَعْفَرٍ مُحَمَّدُ بْنُ يَعْقُوبَ بْنِ إِسْحَاقَ ٱلْكُلَيْنِيُّ ٱلرَّازِيُّ; c. 255 AH / 868 CE – 329 AH / 941 CE) was a Persian Shia Muslim scholar, hadith compiler, and the author of Kitāb al-Kāfī.