Aamir bin Sa’d bin Abi Waqqas narrates from his father that the Prophet Muhammad (peace be upon him) said: “Whoever, upon hearing the muezzin (the call to prayer), says: I also bear witness that there is no deity except Allah, He is One, He has no partner, and I bear witness that Muhammad (peace be upon him) is His servant and His Messenger. I am pleased with Allah as Lord, with Islam as religion, and with Muhammad (peace be upon him) as Messenger (that is, I have faith in them), (the Prophet Muhammad, peace be upon him, says) then the person’s past sins are forgiven.”