Sunan An-Nasai, Chapter: The Book of Purification

I saw Ali performing Wudu. He washed his hands three times, and rinsed his mouth three times and his nose three times, and he washed his face three times and each forearm three times. Then he wiped his head and washed each foot three times. Then he said: 'This is the Wudu of the Prophet (saw).'" (Daif)