Yaaa aiyuhal lazeena aamanoo laa tadkhuloo buyootan ghaira buyootikum hatta tastaanisoo wa tusallimoo 'allaa ahlihaa; zaalikum khairul lakum la'allakum tazakkaroon
O you who have believed, do not enter houses other than your own houses until you ascertain welcome and greet their inhabitants. That is best for you; perhaps you will be reminded.
