Jaʿfar ibn Muḥammad (Arabic: جعفر بن محمد الصادق‎‎; 700 or 702–765 C.E.), commonly known as Jafar al-Sadiq or simply as-Sadiq (The Truthful), was the sixth Shī'ah Imam, and a major figure in the Hanafi and Maliki schools of Sunni jurisprudence. He was a descendant of Ali on the side of his father, Muhammad al-Baqir, and of Muhammad ibn Abu Bakr on the maternal side of his family, Umm Farwah bint al-Qasim. Muhammad ibn Abu Bakr was raised by Ali, but was not his son.

Muhammad ibn ‘Alī ibn Mūsā (Arabic: محمد ابن علی ابن موسی ) (circa 12 April 811 - c. 29 November 835) was the ninth of the Twelve Imams and a descendant of the Prophet Muhammad. He was also called Abu Ja'far, Ibn al-Ridha ("the son of al-Riha); al-Jawād ("the generous") and al-Taqī ("the pious").

Muḥammad ibn ‘Alī ibn Mūsā (Arabic: محمد ابن علی ابن موسی ) (circa 12 April 811 - c. 29 November 835) was the ninth of the Twelve Imams and a descendant of Muhammad. He was also called Abu Ja'far, Ibn al-Ridha ("the son of al-Riha); al-Jawād ("the generous") and al-Taqī ("the pious").