Upon entering the mosque

'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.