The Book On The Mosques And The Congregations
4/13. Chapter:
Supplication When Entering The Mosque
Sunan Ibn Majah
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا أَبُو بَكْرٍ الْحَنَفِيُّ، حَدَّثَنَا الضَّحَّاكُ بْنُ عُثْمَانَ، حَدَّثَنِي سَعِيدٌ الْمَقْبُرِيُّ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ قَالَ " إِذَا دَخَلَ أَحَدُكُمُ الْمَسْجِدَ فَلْيُسَلِّمْ عَلَى النَّبِيِّ ـ صلى الله عليه وسلم ـ وَلْيَقُلِ اللَّهُمَّ افْتَحْ لِي أَبْوَابَ رَحْمَتِكَ وَإِذَا خَرَجَ فَلْيُسَلِّمْ عَلَى النَّبِيِّ وَلْيَقُلِ اللَّهُمَّ اعْصِمْنِي مِنَ الشَّيْطَانِ الرَّجِيمِ " .
It was narrated from Abu Hurairah that: The Mesenger of Allah said: "When anyone of enters the mosque, let him send peace upon the Prophet, then let him say: 'Allahumma aftahli abwaba rahmatik (O Allah, open to me the gates of Your mercy).' And when he leaves, let him send peace upon the Prophet and say: 'Allahumma- simni minash-shaitanir-rajim (O Allah, protect me from the accursed Shaitan).'"
Reference : Sunan Ibn Majah 773In-book reference : Book 4, Hadith 39English translation : Vol. 1, Book 4, Hadith 773