(50) باب صِفَةِ وُضُوءِ النَّبِيِّ صلى الله عليه وسلم
Another version says:
He performed each part of the ablution three times and washed his feet times without number. (FR)
Reference (FR): Sunan Abi Dawud 125 (FR)
In-book reference (FR): Book 1, Hadith 125 (FR)
English translation (FR): Book 1, Hadith 125 (FR)