(53) باب فِي الرَّجُلِ يُسَمِّي دَابَّتَهُ
Mu'adh said "I was seated behind the Prophet (ﷺ) on a donkey that was called 'Ufair".
Reference: Sunan Abi Dawud 2559
In-book reference: Book 15, Hadith 83
English translation: Book 14, Hadith 2553