Al-Būṣīrī said in Miṣbāḥ al-Zujājah (4/132):

“This is an authentic chain of transmission; its narrators are trustworthy. ʿAwn’s brother was named ʿUbayd Allāh ibn [ʿAbd Allāh ibn] ʿUtbah.”

I say: He was trustworthy and highly precise, and was among the narrators relied upon by the Two Shaykhs. His brother ʿAwn was trustworthy and among Muslim’s narrators. Therefore, the uncertainty in it is not harmful, since it can concern no one other than one of these two trustworthy men.

Mūsā ibn Abī ʿĪsā al-Ṭaḥḥān appears thus in Ibn Mājah, whereas in al-Musnad and al-Duʿāʾ it appears as: “Abū ʿĪsā Mūsā al-Ṣaghīr.” In his biography of the former in al-Tahdhīb, al-Ḥāfiẓ mentioned that Abū ʿĪsā’s name was Maysarah, that he narrated from ʿAwn ibn ʿAbd Allāh ibn ʿUtbah, and that Yaḥyā ibn Saʿīd narrated from him. Al-Ḥāfiẓ al-Mizzī likewise mentioned this in his biography, as did he in the biography of Mūsā al-Ṣaghīr, whose father’s name was Muslim and whose kunyah was Abū ʿĪsā, the Kufan flour-seller. In their respective Tahdhīb works, they stated:

“Mūsā al-Ṣaghīr, from whom Abū Muʿāwiyah narrates, is Mūsā ibn Muslim. He is Mūsā al-Ṭaḥḥān; he is Mūsā al-Ṣaghīr; and he is trustworthy.”

I say: It therefore appears that the inclusion of the patronymic marker “ibn” in Sunan Ibn Mājah is an error by either the copyist or the printer, and that the correct reading is “Mūsā Abū ʿĪsā al-Ṭaḥḥān,” with the patronymic omitted. Allah knows best.

Further supporting some of the foregoing is another narration recorded by Aḥmad (4/268): Ibn Numayr narrated to us: Mūsā—meaning Ibn Muslim al-Ṭaḥḥān—narrated to us from ʿAwn ibn ʿAbd Allāh, from his father—or from his brother—with this report.

Ibn Abī Shaybah also recorded it through this chain of transmission in al-Muṣannaf (10/289/9464 and 13/455/16888), except that he did not mention “al-Ṭaḥḥān.” Al-Ṭabarānī narrated it through his route in al-Duʿāʾ, but there it appears as: “Mūsā al-Juhanī”!