Duas for the mosque and the call to prayer

The duas

1. When entering the mosque

   اللَّهُمَّ افْتَحْ لِي أَبْوَابَ رَحْمَتِكَ

   Allâhumma-ftah lî abwâba rahmatik

   O Allah, open the gates of Your mercy for me.

2. When leaving the mosque

   اللَّهُمَّ إِنِّي أَسْأَلُكَ مِنْ فَضْلِكَ

   Allâhumma innî as'aluka min fadlik

   O Allah, I ask You of Your bounty.

3. When setting out for the mosque

   اللَّهُمَّ اجْعَلْ فِي قَلْبِي نُورًا وَفِي لِسَانِي نُورًا وَاجْعَلْ فِي سَمْعِي نُورًا وَاجْعَلْ فِي بَصَرِي نُورًا وَاجْعَلْ مِنْ خَلْفِي نُورًا وَمِنْ أَمَامِي نُورًا وَاجْعَلْ مِنْ فَوْقِي نُورًا وَمِنْ تَحْتِي نُورًا. اللَّهُمَّ أَعْطِنِي نُورًا

   Allâhumma-j'al fî qalbî nûran, wa fî lisânî nûran, wa-j'al fî sam'î nûran, wa-j'al fî basarî nûran, wa-j'al min khalfî nûran, wa min amâmî nûran, wa-j'al min fawqî nûran, wa min tahtî nûrâ. Allâhumma a'tinî nûrâ

   O Allah, place light in my heart and light on my tongue; place light in my hearing and light in my sight; place light behind me and light in front of me; place light above me and light below me. O Allah, grant me light.

4. When entering the mosque, starting with the right foot

   أَعُوذُ بِاللَّهِ العَظِيمِ، وَبِوَجْهِهِ الْكَرِيمِ، وَسُلْطَانِهِ الْقَدِيمِ، مِنَ الشَّيْطَانِ الرَّجِيمِ

   A'ûdhu billâhi l-'azîm, wa bi wajhihi l-karîm, wa sultânihi l-qadîm, mina sh-shaytâni r-rajîm

   I seek refuge in Allah the Supreme, in His noble Face and in His eternal authority, from Satan the accursed.

5. When leaving the mosque, starting with the left foot

   اللَّهُمَّ اعْصِمْنِي مِنَ الشَّيْطَانِ الرَّجِيمِ

   Allâhumma-'simnî mina sh-shaytâni r-rajîm

   O Allah, protect me from Satan the accursed.

6. When the muezzin says the declaration of faith

   And I too bear witness that there is no god worthy of worship but Allah alone, without partner, and that Muhammad is His servant and His Messenger. I am pleased with Allah as Lord, with Muhammad as Messenger and with Islam as religion.

7. After the call to prayer

   اللَّهُمَّ رَبَّ هَذِهِ الدَّعْوَةِ التَّامَّةِ، وَالصَّلاَةِ الْقَائِمَةِ، آتِ مُحَمَّداً الْوَسِيلَةَ وَالْفَضِيلَةَ، وَابْعَثْهُ مَقَامَاً مَحمُوداً الَّذِي وَعَدْتَهُ

   Allâhumma rabba hâdhihi d-da'wati t-tâmmah, wa s-salâti l-qâ'imah, âti Muhammadan l-wasîlata wa l-fadîlah, wa-b'ath-hu maqâman mahmûdan l-ladhî wa'adtah

   O Allah, Lord of this perfect call and of the prayer about to be established, grant Muhammad al-wasilah and the highest degree, and raise him to the praised station You have promised him.

   This dua has its own page: Dua after the adhan

When to say them

You enter with the right foot saying the dua for entering, and leave with the left foot with the dua for leaving.

The dua after the adhan is said when the muezzin has finished: it has its own page, with the merit the hadith gives it.