Chapter 1: Purification (Kitab Al-Taharah)
Narrated Al-Miqdam ibn Ma' dikarib al-Kindi: The ablution water was brought to the Messenger (ﷺ) and he performed ablution; he washed his hands up to wrists three times, then washed his forearms three times. He then rinsed his mouth and snuffed up water three times; then he wiped his head and ears inside and outside.
Sunan Abi Dawud 121