Muḥammad al-Baqir, full name Muhammad bin 'Ali bin al-Husayn bin Ali bin Abi Talib, also known as Abu Ja'far or simply al-Baqir (Arabic: محمد الباقر‎, romanized: al-Bāqir, lit. 'the one who opens knowledge') (677-733) was the fifth Shia Imam, succeeding his father Zayn al-Abidin and succeeded by his son Ja'far al-Sadiq.

Alī ibn Muḥammad ibn ‘Alī (Arabic: علي بن محمد بن علي‎‎; 829-868 C.E.) was the tenth of the Twelve Imams after his father Muhammad al-Jawad and before his son Hasan al-Askari. He remained in Medina teaching until the age of 30 when he was summoned to Samarra by the Abbasid caliph Al-Mutawakkil. There he was treated roughly by the caliph and his successors until, according to Shiite accounts, he was poisoned through intrigue of Al-Mu'tazz the Abbasid caliph, in 254/868, and was buried in Samarra.

Imam al-Ḥasan ibn Alī ibn Abī Ṭālib (الحسن ابن علي ابن أبي طالب‎‎, 624–670 CE), commonly known as Hasan or Hassan, is the eldest son of Muhammad's daughter Fatimah and of Ali, and the older brother to Husayn. Muslims respect him as a grandson of the Islamic Prophet Muhammad. Among Shia Muslims, Hasan is revered as the 2nd Imam.

ʿAlī ibn Abī Ṭālib (Arabic: عَلِيّ بْن أَبِي طَالِب; c. 600 – 661 CE) was the last Caliph of the Rashidun Caliphate, the successor state to the Islamic prophet Muhammad's political dominions. He is considered by Shia Muslims to be the first Imam, the rightful religious and political successor to Muhammad.