Sayyiduna Sa’d bin Abi Waqqas (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said:“Whoever, upon hearing the voice of the muezzin, says these words: «‏‏‏‏أَنَا أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللهُ، وَحْدَهُ لَا شَرِيكَ لَهُ، وَأَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ، رَضِيتُ بِاللَّهِ رَبًّا، وَبِمُحَمَّدٍ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَسُولًا وَ بِالْإِسْلَامِ دِينًا،» ‏‏‏‏ . ‘And I also bear witness that there is no deity worthy of worship except Allah, He is alone and has no partner, and indeed Muhammad (peace and blessings be upon him) is His servant and Messenger. I am pleased with Allah as my Lord, with Muhammad (peace and blessings be upon him) as Messenger, and with Islam as my religion.’ — his sins will be forgiven.”