Mawla Usman Harith says: One day Sayyiduna Usman (may Allah be pleased with him) was sitting, and we also sat around him. When the muezzin came, he asked for water in a vessel; I think it was a mudd of water. Then he performed ablution and said: I saw the Messenger of Allah (peace and blessings be upon him) perform ablution like my ablution, and he said: Whoever performs ablution like my ablution and then stands and offers the Zuhr prayer, his sins committed between this Zuhr and Fajr will be forgiven. Then when he offers the Asr prayer, the sins between Asr and Zuhr will be forgiven. When he offers the Maghrib prayer, the sins between this prayer and Asr will be forgiven. When he offers the Isha prayer, the sins between Isha and Maghrib will be forgiven. Then it is possible that he spends the night tossing and turning, then when he gets up and performs ablution and offers the Fajr prayer, the sins between this prayer and the Isha prayer will be forgiven. These are the good deeds that erase the bad deeds. The people said: These are the good deeds, what are the remaining things, O Usman!? He said: They are these remembrances: La ilaha illallah, Subhanallah, Alhamdulillah, Allahu Akbar, La hawla wa la quwwata illa billah.