Muslim is one who does not give others trouble. People will lift the curtain to Qari Sahab (DB)'s room and say may I come in. When beloved Prophet (PBUH) was give trouble like that Qura'nic Verses were revealed to put the things straight. These things belong to etiquette. Etiquette is a subject matter of learning.
(Sitting (majlis) on Friday, October 15, 2010)