Musnad Ahmad 30:1456

'Affan narrated to us, Hammam narrated to us, 'Amir—meaning al-Ahwal—narrated to us, from 'Ata', from Abu Hurairah: "That the Prophet, peace and blessings of Allah be upon him, performed ablution (wudu). He rinsed his mouth three times, inhaled water into his nose three times, washed his face three times, and washed his hands three times. He wiped his head, and he washed his feet."