sentences:  His pupil, the al-Shaykh al-Mufid, revised this creed in "Tashih al-I'tiqad", critiquing several points.Ibn Babawayh was a prolific scholar.Muhammad ibn Al-Hasan al-Tusi (d. 1067 CE) numbered Ibn Babawayh's works at over 300 but counted only 43 in his immediate possession.