He reported, "I saw the Messenger of Allah ﷺ praying upon a donkey while heading toward Khaybar."
حدثنا القعنبي عن مالك عن عمرو بن يحيى المازني عن أبي الحباب سعيد بن يسار
أنه قال رأيت رسول الله ﷺ يصلي على حمار وهو متوجه إلى خيبر
Takhrij (chain evaluation)Muslim narrated it in Salat al-Musafirin, chapter on the permissibility of performing voluntary prayer while riding on a mount, etc., hadith no. 700, through the hadith of Malik, transmitted by him. It is also in Muwatta (Yahya version), 1/150, 151, (and Qanabi version, p. 195).