عَنْ سَعْدِ بْنِ أَبِي وَقَّاصٍ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ: ((مَنْ قَالَ حِينَ يَسْمَعُ الْمُؤَذِّنَ: وَأَنَا أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ وَأَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ رَضِينَا بِاللَّهِ رَبَّا وَبِمُحَمَّدٍ رَسُولًا وَبِالْإِسْلَامِ دِينًا غُفِرَ لَهُ ذَنْبُهُ))
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 muezzin, recites this supplication: ((And I also bear witness that there is no deity except Allah, He is alone, He has no partner, and that Muhammad is His servant and Messenger. We are pleased with Allah as Lord, with Muhammad as Messenger, and with Islam as religion.)) … then his sins are forgiven.