"Whenever the Messenger of Allah entered the mosque he would say: 'Bismillah, was-salamu 'ala Rasulillah, Allahummagh-firli dhunubi waftah li abwaba rahmatika. (In the Name of Allah, and peace be upon the Messenger of Allah. O Allah, forgive me my sins and open to me the gates of Your mercy).' When he left he would say: 'Bismillah, was-salamu 'ala Rasulillah, Allahummagh-firli dhunubi waftah li abwaba fadlika. (In the Name of Allah, and peace be upon the Messenger of Allah. O Allah, forgive me my sins and open to me the gates of Your bounty).'"

When any of you enters the mosque he should say, “O God, open to me the gates of Thy mercy, “and when he goes out he should say “O God, I ask Thee out of Thine abundance.” Muslim transmitted it.

"I heard Abu Humaid and Abu Usaid say: 'The Messenger of Allah (PBUH) said: "When any one of you enters the Masjid, let him say: 'Allahumma aftahli abwaba rahmatik (O Allah, open to me the gates of your mercy). And when he leaves let him say: Allahumma inni as'aluka min fadlik (O Allah, I ask You of Your bounty).'"

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.)

when any of you enters the mosque he should invoke blessing on the prophet (may peace be upon him) and then he should say: O Allah, open to me the gates of thy mercy. And when he goes out, he should say: O Allah, I ask thee out of Thine abundance.

"When Allah's Messenger entered the Masjid he said Salat and Salam upon Muhammad and then said: (Rabbighfirli dhunubi, waftahli abwaba rahmatik) 'O pardon my sins, and open the gates of Your mercy for me.' And when he exited he said Salat and Salam upon Muhammad, and then said: (Rabbighfirli dunubi, waftahli abwaba rakmatik) 'O Lord pardon my sins, and open the gates of Your blessings for me.'"

Fatima daughter of al-Husain said on the authority of her grand-mother, Fatima the elder,* that when the Prophet entered the mosque he would pray for blessings and safety for himself and say, “My Lord, forgive me my sins, and open to me the gates of Thy mercy.” And when he went out he would pray for blessings and safety for himself and say, “My Lord, forgive me my sins, and open to me the gates of Thy abundance.” *The daughter of the Prophet who married ‘Ali. Tirmidhi, Ahmad and Ibn Majah transmitted it. In the version of the last two she said that when he entered the mosque, and also when he came out, he said, “In the name of God, and peace be upon God’s Messenger,” instead of “he would pray for blessings and safety for himself.” Tirmidhi said that its isnad is not connected, for Fatima daughter of al-Husain was not born in the lifetime of Fatima the elder.

"The Messenger of Allah said: 'When anyone of you enters the mosque, let him send peace upon the prophet, then let him say: "Allahummaftah li abwaba rahmatika (O Allah, open to me the gates of Your mercy)." And when he leaves, let him say: "Allahumma inni as'aluka min fadlika. (O Allah, I ask of you from Your bounty)."

'A`ūdhu billāhi l-`aẓīm, wa bi-wajhihil-karīm, wa sultānihil-qadīm, min ash-shaytānir-rajīm. [Bismillāhi, wassalātu wassalāmu `alā rasūlillāhi.] Allāhummaftaḥ lī 'abwāba raḥmatik. I seek refuge in Almighty Allah, By His Noble Face, By His primordial power, From Satan the outcast.¹ [In the Name of Allah, and blessings ² and peace be upon the Messenger of Allah.³ O Allah, open before me the doors of Your mercy.⁴ Reference: 1. Abu Dawud and Al-Albani, Sahihul-Jdmi' As-Saghir (Hadithno. 4591). 2. Ibn As-Sunni (Hadith no. 88), graded good by Al-Albani. 3. Abu Dawud 1/126, see also Al-Albani, Sahihul-Jami'As-Saghir 1/528. 4. Muslim 1/494. There is also a report in Sunan Ibn Majah on the authority of Fatimah (RA), : "O Allah, forgive me my sins and open for me the doors of Your mercy." It was graded authentic by Al-Albani due to supporting Ahadith. See Sahih Ibn Majah 1/128-9.

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).'"

"I met Abdullah bin al Husain in Makkah, so I asked him about this Hadith, so he narrated it to me, he said: 'When Allah's Messenger entered, he said (Rabbi aftahli abwaba rahmatik) 'O Lord, open the gates of Your mercy for me.' And when he exited he said: (Rabbi iftahli abwaba fadlik) 'O Lord, open the gates of Your blessings for me.'"

Meat was one day brought to the Messenger of Allah (may peace be upon him) and a foreleg was offered to him, a part which he liked. He sliced with his teeth a piece out of it and said: I shall be the leader of mankind on the Day of Resurrection. Do you know why? Allah would gather in one plain the earlier and the later (of the human race) on the Day of Resurrection. Then the voice of the proclaimer would be heard by all of them and the eyesight would penetrate through all of them and the sun would come near. People would then experience a degree of anguish, anxiety and agony which they shall not be able to bear and they shall not be able to stand. Some people would say to the others: Don you see in which trouble you are? Don't you see what (misfortune) has overtaken you? Why don't you find one who should intercede for you with your Lord? Some would say to the others: Go to Adam. And they would go to Adam and say: O Adam, thou art the father of mankind. Allah created thee by His own Hand and breathed in thee of His spirit and ordered the angels to prostrate before thee. Intercede for us with thy Lord Don't you see in what (trouble) we are? Don't you see what (misfortune) has overtaken us? Adam would say: Verily, my Lord is angry, to an extent to which He had never been angry before nor would He be angry afterward. Verily, He forbade me (to go near) that tree and I disobeyed Him. I am concerned with my own self. Go to someone else; go to Noah. They would come to Noah and would say: O Noah, thou art the first of the Messengers (sent) on the earth (after Adam), and Allah named thee as a" Grateful Servant," intercede for us with thy Lord. Don't you see in what (trouble) we are? Don't you see what (misfortune) has overtaken us? He would say: Verily, my Lord is angry today as He had never been angry before, and would never be angry afterwards. There had emanated a curse from me with which I cursed my people. I am concerned with only myself, I am concerned only with myself; you better go to Ibrahim (peace be upon him). They would go to Ibrahim and say: Thou art the apostle of Allah and His Friend amongst the inhabitants of the earth; intercede for us with thy Lord. Don't you see in which (trouble) we are? Don't you see what (misfortune) has overtaken us? Ibrahim would say to them: Verily, my Lord is today angry as He had never been angry before and would never be angry afterwards. and (Ibrahim) would mention his lies (and then say): I am concerned ...

Open it for him and give him glad tidings of Paradise and, lo, it was Abu Bakr. I opened (the gate) for him and gave him the glad tidings of Paradise. Then another person asked for the door to be opened, whereupon he said: Open it and give him the glad tidings of Piradise. He said: I went away and, lo, it was 'Umar. I opened it for him and gave him the glad tidings of Paradise. Then still another man asked for the door to be opened, and thereupon Allah's Apostle (may peace be upon him) said: Open it and give him the glad tidings of Paradise after a trial would afflict him. I went and, lo, it was 'Uthman b. 'Affan. 1 opened the door and gave him the glad tidings of Paradise and informed him (what the Holy Prophet had said). Thereupon he said: O Allah, grant me steadfastness. Allah is one Whose help is to be sought.