Jāmiʿ al-Ruwāt
p. 104 disputedمحمد بن حمران بن أعين مولى بنى شيبان (ق) له كتاب عنه ابن أبي عمير وابن أبي نجران (ست)
Mawla of Banu Shayban. Has a book. Also mentions Muhammad ibn Humran, mawla of Banu Fahr, who is NOT ibn A'yan. Then mentions Muhammad ibn Humran al-Nahdi, Thiqa. The author suggests they might be the same person due to shared Kufa origin and overlapping narrations.
Listed under al-Ṣādiq (ʿa)