one hundred and twenty-something AH. Al-Mahdī had him brought to Baghdad, then sent him back to Medina, where he remained until al-Rashīd’s reign. Hārūn then arrived on his return from an umrah and took Mūsā with him to Baghdad, where he imprisoned him until he died in confinement (1).

Ibn Sa‘d said:

“He died (2) in 183 AH. He did not narrate many reports. He narrated from his father, Ja‘far, and his brother ‘Alī narrated from him. Al-Tirmidhī and Ibn Mājah also transmitted reports from him.” (3)

As for those who came after Mūsā (4), no body of knowledge was transmitted from them for which accounts of them would be recorded in the works and histories of those renowned for learning (5). The hadiths of those three, by contrast, are found in the Sahih collections, the Sunan collections, and the Musnad collections (6), while their legal opinions are found in works compiling the legal opinions of the early generations, such as the books of Ibn al-Mubārak, Sa‘īd ibn Mansūr, ‘Abd al-Razzāq, Abū Bakr ibn Abī Shayba, and others. As for those who came after them, they have (7) no narrations in the principal books (8) of hadith, no legal opinions in the well-known works that transmitted the legal opinions of the early generations, and no views concerning tafsīr or other subjects