Hazrat Ali (may Allah be pleased with him) says that whenever I heard a hadith from the Prophet (peace and blessings be upon him), Allah Almighty, as He willed, made me benefit from it. And when another person narrated a hadith of the Prophet (peace and blessings be upon him) to me, I would make him swear an oath; when he swore that he had heard this hadith from the Prophet (peace and blessings be upon him), only then would I accept his statement as true. Hazrat Abu Bakr Siddiq (may Allah be pleased with him) narrated this hadith to me, and he is truthful in narrating this hadith, that he heard the Messenger of Allah (peace and blessings be upon him) say: Whoever commits a sin, then performs ablution and does it well, then offers two units of prayer and seeks forgiveness from Allah for his sin, Allah Almighty will surely forgive his sin.