Osman b. Aftan

Humran, the freed slave of 'Uthman b. 'Affan, reported on the authority of 'Uthman b. 'Affan that he heard Allah's Messenger (ﷺ) say:He who performed ablution for prayer and performed it properly and then went (to observe) obligatory prayer and offered it along with people or with the congregation or in the mosque, Allah would pardon his sins

Sahih Müslim ·Taharet (Temizlik) ·Hadis 549 ·machine translation (native_alignment)

Yahya related to me from Malik from Ibn Shihab from Humayd ibn Abd ar-Rahman that Umar ibn al-Khattab and Uthman ibn Affan would pray maghrib when they saw the night darkening, before they broke their fast, and that was during Ramadan

Muvatta-i Malik ·Oruç (Sıyam) ·Hadis 638 ·machine translation (native_alignment)

Humran, the freed slave of 'Uthman, said:Uthman b. 'Affan called for ablution water and this is how he performed the ablution. He washed his hands thrice. He then rinsed his mouth and cleaned his nose with water (three times). He then washed his face three times, then washed his right arm up to the elbow three times, then washed his left arm like that, then wiped his head; then washed his right foot up to the ankle three times, then washed his left foot like that, and then said: I saw the Messenger of Allah (ﷺ) perform ablution like this ablution of mine. Then the Messenger of Allah (ﷺ) said: He who performs ablution like this ablution of mine and then stood up (for prayer) and offered two rak'ahs of prayer without allowing his thoughts to be distracted, all his previous sins are expiated. Ibn Shihab said: Our scholars remarked: This is the most complete of the ablutions performed for prayer

Sahih Müslim ·Taharet (Temizlik) ·Hadis 538 ·machine translation (native_alignment)