(50) باب صِفَةِ وُضُوءِ النَّبِيِّ صلى الله عليه وسلم
Humran said :
I saw 'Uthman b. 'Affan performing ablution. He then narrated the same tradition. In this version there is no mention of rinsing the mouth and snuffing up water. This traditions adds : "He wiped his head three times. He then washed his feet three times. He then said : I saw the Messenger of Allah (ﷺ) performing ablution in like manner. He (the Prophet) said: He who performs ablution less than this, it is sufficient for him. 73 The narrator did not mention prayer (in this version).
Reference: Sunan Abi Dawud 107
In-book reference: Book 1, Hadith 107
English translation: Book 1, Hadith 107