Musannaf Ibn Abi Shayba 1:1957

Thaqafi narrated to us, from Abu Amir al-Khazzaz, who said: al-Hasan narrated to us, from al-Mughira ibn Shu'ba, who said: I saw the Messenger of Allah (ﷺ) urinate, then he came and performed ablution (wudu) and wiped over his leather socks. He placed his right hand on his right leather sock and his left hand on his left leather sock. Then he wiped the upper parts of them with a single wiping, until it was as if I were looking at the fingers of the Messenger of Allah (ﷺ) upon the leather socks.