Humran bin Abban, the freed slave of Uthman, said: I saw Uthman bin Affan while he performed ablution. He poured water over his hands three times and then washed them. He then rinsed his mouth and then cleansed his nose with water (three times). He then washed his right arm up to the elbow three times, then washed his left arm in a similar manner; then wiped his head; then washed his right foot three times, then washed his left foot in a similar manner, and then said: I saw the Messenger of Allah ﷺ performing ablution like this ablution of mine. Then he (the Prophet) said: He who performs ablution like this ablution of mine and then offered two rakhahs of prayer without allowing his thoughts to be distracted, Allah will pardon all his past sins.
Hadith Referenceسنن ابي داود / كتاب الطهارة / 106
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (1934) صحيح مسلم (226)
Humran said: I saw Uthman bin 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. 73The narrator did not mention prayer (in this version).
Hadith Referenceسنن ابي داود / كتاب الطهارة / 107
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:إسناده حسن, دار قطني: 1/ 91 ح 299، وللحديث شواھد كثيرة
Hadith Takhrij« تفرد بہ أبو داود، (تحفة الأشراف: 9799) (حسن صحیح) » (سر کے تین بار مسح کی روایت شاذ ہے، جیسا کہ آگے تفصیل آ رہی ہے)