(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. (ES)
Reference (ES): Sunan Abi Dawud 125 (ES)
In-book reference (ES): Book 1, Hadith 125 (ES)
English translation (ES): Book 1, Hadith 125 (ES)