Muhammad al-Baqir
Muhammad al-Baqir is known as the first Shia Imam who engaged in the systematic teaching. He was living in Medina, however most of his disciples were in Kufa, some others in Mecca and Basra. Most prominent, among them were Jabir ibn Yazid al-Ju'fi, Aban ibn Taghlib, Zurara ibn A'yan and Burayd ibn Mu'awiya al-ijli.