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