Humran reports that Sayyiduna Uthman (may Allah be pleased with him) sat on a bench and performed ablution, washing each limb three times, and said: I heard the Prophet (peace and blessings be upon him) say: "Whoever performs ablution like mine, then offers prayer, his sins fall away from his face, hands, feet, and head."
Hadith Referenceمسند احمد / مسند الخلفاء الراشدين / 493