If anyone says when he hears the MU’ADHDHIN : “And I testify that there is no god but Allah alone who has no partner and that Muhammad is His servant and Apostle: I am satisfied with Allah as lord, with Muhammad as apostle and with Islam as religion”, he will be forgiven. (Using translation from Abū Dāʾūd 525)  

عَنْ رَسُولِ اللهِ ﷺ قَالَ «مَنْ قَالَ حِينَ يَسْمَعُ الْمُؤَذِّنَ وَأَنَا أَشْهَدُ أَنْ لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ وَأَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ رَضِيتُ بِاللهِ رَبًّا وَبِمُحَمَّدٍ ﷺ رَسُولًا وَبِالْإِسْلَامِ دِينًا غُفِرَ لَهُ ذَنْبُهُ»  

if anyone says when he hears the call to prayer : “O Allah, Lord of this perfect call and of the prayer which is established for all time, grant Muhammad the wasilah and excellency, and raise him up in a praiseworthy position which Thou hast promised, he will be assured of my intercession. (Using translation from Abū Dāʾūd 529)  

قَالَ رَسُولُ اللهِ ﷺ «مَنْ قَالَ حِينَ يَسْمَعُ النِّدَاءَ اللهُمَّ رَبَّ هذه الدَّعْوَةِ التَّامَّةِ وَالصَّلَاةِ الْقَائِمَةِ آتِ مُحَمَّدًا الْوَسِيلَةَ وَالْفَضِيلَةَ وَابْعَثْهُ مَقَامًا مَحْمُودًا الَّذِي وَعَدْتَهُ حَلَّتْ لَهُ الشَّفَاعَةُ يَوْمَ الْقِيَامَةِ»