باب الْكَشْفِ عَنْ مَعَايِبِ، رُوَاةِ الْحَدِيثِ وَنَقَلَةِ الأَخْبَارِ وَقَوْلِ الأَئِمَّةِ فِي ذَلِكَ Chapter: Unveiling Defects of the Transmitters of Ḥadīth and Relaters of Reports and the Statements of the A’immah Regarding That
Salamah bin Shabīb narrated to me, al-Humaydī narrated to us, Sufyān narrated to us, he said I heard Abū Mūsā [Isrā’īl bin Mūsā al-Basrī] saying:‘Amr bin Ubayd narrated to us before what happened’ [i.e. before he became Mu’tazilī].