Sunnats and Aadaab of the Masjid_2

7. Enter the musjid with the right foot.
8. Recite the masnoon duas when entering the musjid. 
بِسْمِ اللهِ وَالصَّلَاةُ وَالسَّلَامُ عَلَى رَسُوْلِ اللهِ اللَّهُمَّ افْتَحْ لِي أَبْوَابَ رَحْمَتِكَ
(I enter) with the name of Allah. May peace and salutations be upon Rasulullah (Sallallahu alayhi wasallam). O Allah, open for me the doors of Your mercy

9. Make the intention of nafl i’tikaaf for as long as you will remain in the musjid.
10. Upon entering the musjid, make salaam to those in the musjid, provided they are not engaged in any ibaadah. However, if people are engaged in salaah, then do not make salaam.
11. Perform two rakaats of Tahiyyatul Musjid upon entering, as long as it is not the makrooh time for performing salaah.
12. Do not carry out any business transaction in the musjid. 
13. Do not make any announcement for lost items in the musjid.
14. Do not raise your voice or make a noise in the musjid and in the area surrounding the musjid.
15. Ensure that you switch off your cellphone when entering the musjid so that it does not cause a disturbance to those engaged in performing salaah and other ibaadaat.