Shaykh Saduq

Abu Ja'far Muhammad ibn 'Ali ibn Babawayh al-Qummi, commonly referred to as Ibn Babawayh or al-Shaykh al-Saduq, was a Shia Muslim scholar, jurist (faqīh), theologian and hadith collector of Persian descent. He is part of the first generation of fuqaha (jurists) after the Major Occultation in 941, and is known to have extensively traveled between Baghdad, Iran and Transoxiana, where he met with established Shi'i communities and circles. His work, entitled Man La Yahduruhu al-Faqih, forms part of The Four Books of the Shia Hadith collection.