Abu Dawud said: This 'Abd al-Rahman is Ibn Ma'qil.
Abu Dawud said: Suh'bah transmitted this tradition from 'Ubaid Abi al-Hasan, from 'Abd al-Rahman bin Maq'il, from'Abd al-Rahman bin Bishr, from some people of Muzainah stating that Abjar, the chief of Muzainah, or Ibn Abjar asked the Prophet (ﷺ).
In-book : Book 28, Hadith 74
English translation : Book 27, Hadith 3800