And Zuhayr ibn Harb narrated to me, saying: Ya'qub ibn Ibrahim narrated to us, saying: my father narrated to us, from Ibn Shihab, from 'Ata' ibn Yazid al-Laythi, from Humran, the freed slave of 'Uthman, that he saw 'Uthman call for a vessel, then pour water over his hands three times and wash them. Then he put his right hand into the vessel, rinsed his mouth, and snuffed water into his nose. Then he washed his face three times, and his hands up to the elbows three times. Then he wiped his head, then washed his feet three times. Then he said: The Messenger of Allah, peace and blessings be upon him, said: "Whoever performs ablution like this ablution of mine, then prays two rak'ahs without letting his mind wander in them, his previous sins will be forgiven."