I met ‘Uqbah b. Muslim and said to him: it has been reported to me that someone has narrated to you from the prophet (Peace and blessings of Allah be upon him) that when he entered the mosque, he would say:
“ أَعُوذُ بِاللَّهِ الْعَظِيمِ وَبِوَجْهِهِ الْكَرِيمِ وَسُلْطَانِهِ
الْقَدِيمِ مِنَ الشَّيْطَانِ الرَّجِيمِ
I seek refuge in Allah, the Magnificent, and in His noble face, and in his eternal domain, from the accursed Devil.
He asked : is it so much only? I said: Yes. He said: when anyone says so. The devil says: he is protected from me all the day long.
Sunan Abi Dawud 466 Also See Sahih Al-Jami’ 4591
2. Abu Usaid reported that the Messenger of Allah (Peace and blessings of Allah be upon him) said:
When any one of you enters the mosque, he should say:
اللَّهُمَّ افْتَحْ لِي أَبْوَابَ رَحْمَتِكَ .
” O Allah! open for me the doors of Thy mercy” ;
and when he steps out he should say:
اللَّهُمَّ إِنِّي أَسْأَلُكَ مِنْ فَضْلِكَ
‘O Allah! I beg of Thee Thy Grace.”
(Imam Muslim said: I heard Yahya saying: I transcribed this hadith from the compilation of Sulaiman b. Bilal.
Sahih Muslim 713
Other references
Ibn As-Sunni (Hadith no. 88), graded good by Al-Albani.
Abu Dawud 1/126, see also Al-Albani, Sahihul-Jami’As-Saghir 1/528.
Memorize,put into practice and share with family and Friends.