Sayyiduna Jubayr bin Mut'im (may Allah be pleased with him) narrates: I lost a donkey on the Day of Arafah, so I went out searching for it, and there was the Messenger of Allah (peace and blessings be upon him) standing on his camel. That was after revelation had come down to him (peace and blessings be upon him).
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1585