(10) باب مَا يَقُولُ إِذَا دَخَلَ الْمَسْجِدَ
Abu Usaid reported that the Messenger of Allah (ﷺ) said:
When any one of you enters the mosque, he should say:" O Allah! open for me the doors of Thy mercy" ; and when he steps out he should say: '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.) (IT)
Reference (IT): Sahih Muslim 713 a (IT)
In-book reference (IT): Book 6, Hadith 82 (IT)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1538 (IT)