Musnad Ahmad #997

It was narrated that Abu Hayyah said: I saw ‘Ali urinate in ar-Rahbah. (Then) he called for water and did wudoo’. He washed his hands three times, rinsed his mouth and nose three times, washed his face three times, washed his forearms three times each, wiped his head and washed his feet three times each. Then he stood up and drank from the leftover water, then he said: I saw the Messenger of Allah (ﷺ) do what you have seen me do, and I wanted to show it to you.