Imam Muhammad al-Baqir was born at Medina on Tuesday, 3rd Safar, 57 A.H. His mother was the daughter of Imam Hasan. Thus Imam Muhammad al-Baqir combined in himself the families of Imam Hasan and Imam Husayn.
Imam Muhammad al-Baqir became imam after his father in 96(/95) A.H. He is said to have been very learned, and many of his sayings are reported. Because of his vast knowledge, he was given the title of al-Baqir, which means 'the exponder of knowledge'.