بِسْمِ اللَّهِ وَالصَّلَاةُ وَالسَّلَامُ عَلَىٰ رَسُولِ اللَّهِ، اللَّهُمَّ افْتَحْ لِي أَبْوَابَ رَحْمَتِكَ
Bismillah, wassalatu wassalamu 'ala Rasulillah. Allahummaf-tah li abwaba rahmatik
In the Name of Allah, and peace and blessings be upon the Messenger of Allah. O Allah, open for me the gates of Your mercy.
The full Sunnah when entering the masjid: step in with the right foot, say Bismillah, send salawat upon the Prophet ﷺ, then ask Allah to open the gates of His mercy. The masjid is Allah's house — you enter it as a guest seeking His hospitality. "Abwab rahmatik" (gates of Your mercy) is plural — not one gate but many, because the masjid is a place where countless forms of mercy converge: prayer, knowledge, community, forgiveness, and divine closeness. When leaving, the du'a changes to asking for fadl (bounty), reflecting the shift from spiritual focus to worldly responsibility.
Related Du'as
لَا إِلَٰهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ يُحْيِي وَيُمِيتُ وَهُوَ حَيٌّ لَا يَمُوتُ بِيَدِهِ الْخَيْرُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ
There is no deity except Allah, alone without partner. His is the dominion and His is the praise. He gives life and causes death, and He is the Ever-Living who does not die. In His hand is all good, and He is over all things capable.
Hasanاللَّهُمَّ لَكَ الْحَمْدُ أَنْتَ كَسَوْتَنِيهِ أَسْأَلُكَ مِنْ خَيْرِهِ وَخَيْرِ مَا صُنِعَ لَهُ وَأَعُوذُ بِكَ مِنْ شَرِّهِ وَشَرِّ مَا صُنِعَ لَهُ
O Allah, praise is for You. You have clothed me with it. I ask You for its goodness and the goodness for which it was made, and I seek refuge in You from its evil and the evil for which it was made.
Sahihوَأَنَا أَشْهَدُ أَنْ لَا إِلَٰهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ وَأَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ، رَضِيتُ بِاللَّهِ رَبًّا وَبِمُحَمَّدٍ رَسُولًا وَبِالْإِسْلَامِ دِينًا
And I bear witness that there is no deity except Allah alone, with no partner, and that Muhammad is His servant and messenger. I am pleased with Allah as Lord, Muhammad as Messenger, and Islam as religion.
Sahihالسَّلَامُ عَلَيْنَا وَعَلَى عِبَادِ اللَّهِ الصَّالِحِينَ
Peace be upon us and upon the righteous servants of Allah.
Hasan