Abu Dawud
Purification (Kitab Al-Taharah)
Book Number: 001 / Hadith Number: 151
Narated By N/A : 'Urwah b. al-Mughirah reported his father as saying: We accompanied the Apostle of Allah (may peace be upon him) to a caravan, and I had a jug of water. He went to relieve himself and came back. I came to him with the jug of water and poured upon him. He washed his hands and face. He had a tight-sleeved Syrian woollen gown. He tried to get his forearms out, but the sleeve of the gown was very narrow, so he brought his hands out from under the gown. I then bent down to take off his socks. But he said to me: Leave them, for my feet were clean when I put them in, and he only wiped over them.'
Yunus said on the authority of al-Sha'bi that 'Urwah narrated this tradition from his father before him, and his father reported it from the Messenger of Allah (may peace be upon him).