Abu Humayd and Abu Usaid Ansari (may Allah be pleased with them) say that the Messenger of Allah (peace and blessings be upon him) said: "When any one of you enters the mosque, he should first send peace and blessings upon the Prophet (peace be upon him), then say: «اَللّٰهُمَّافْتَحْلِيْأَبْوَابَرَحْمَتِكَ» 'O Allah, open the doors of Your mercy for me.' And when he leaves the mosque, he should say: «اَللّٰهُمَّإِنِّيْأَسْأَلُكَمِنْفَضْلِكَ» 'O Allah, I ask You for Your bounty,' meaning sustenance and other worldly blessings."
Hadith Referenceسنن دارمي / من كتاب الصللاة / 1432
Hadith Takhrijاس حدیث کی سند صحیح ہے۔ دیکھئے: [مسلم 713 بدون ذكر التسليم على النبي] ، [أبوداؤد 465] ، [نسائي 728] ، [ابن ماجه 772] ، [ابن حبان 2048] ، بعض روایات میں ابوحمید او ابواسید آیا ہے۔