(50) باب صِفَةِ وُضُوءِ النَّبِيِّ صلى الله عليه وسلم
Habban b. Wasi' reported on the authority of his father who heard 'Abd Allah b. Zaid al-Asim al-Mazini say that he saw the Messenger of Allah (ﷺ) performing ablution. He then described his ablution saying:
He wiped his head with water which was not what was left over after washing his hands (i.e. he wiped his head with clean water); then he washed his feet until he cleansed them.
Reference: Sunan Abi Dawud 120
In-book reference: Book 1, Hadith 120
English translation: Book 1, Hadith 120