Believers, enter not the houses of the Prophet without his permission, nor wait for a meal to be prepared; instead enter when you are invited to eat, and when you have had the meal, disperse. Do not linger in idle talk. That is hurtful to the Prophet but he does not express it out of shyness; but Allah is not ashamed of speaking out the Truth. And if you were to ask the wives of the Prophet for something, ask from behind a curtain. That is more apt for the cleanness of your hearts and theirs. It is not lawful for you to cause hurt to Allah's Messenger, nor to ever marry his wives after him. Surely that would be an enormous sin in Allah's sight.