Musannaf Ibn Abi Shayba 1:1876

Jarir ibn Abd al-Hamid narrated to us, from Abd al-Aziz ibn Rufay’, from Ali ibn Rabi’ah, who said: Al-Mughirah ibn Shu’bah addressed us and said: "O people, I was with the Prophet, may Allah bless him and grant him peace, in a traveling party. He dismounted and relieved himself, so I brought him water. He performed ablution and wiped over his leather socks."