(50) باب صِفَةِ وُضُوءِ النَّبِيِّ صلى الله عليه وسلم
Another version says:
He wiped his ears inside and outside. Hisham adds: He inserted his fingers in the ear-holes. (ID)
Reference (ID): Sunan Abi Dawud 123 (ID)
In-book reference (ID): Book 1, Hadith 123 (ID)
English translation (ID): Book 1, Hadith 123 (ID)