Mua'wiya bin Hisham al-Qsar معاوية بن هشام القصار · The Book on Jana''iz (Funerals)

"The Messenger of Allah would visit the sick, attend the funerals, ride a donkey, accept the invitation of a slave, and on the Day of Banu Quraizah he was on a donkey muzzled with a cord of fibers and a pack-saddle made of fibers."