Al-Ahzaab 33:53

O you who believe, do not enter the houses of the Prophet unless you are given permission for a meal; not so early as to wait for the meal to be prepared. But if you are invited, then enter, and when you have eaten, then disperse, without lingering for conversation. Such [behavior] causes annoyance to the Prophet; he is too shy to express it to you, but Allah is not shy of [telling] the truth. And if you ask his wives for something, ask them from behind a screen; that is purer for your hearts and their hearts. It is not lawful for you to cause annoyance to Allah’s Messenger, or to ever marry his wives after him, for that is indeed an enormous sin before Allah.

O you who have believed, do not enter the houses of the Prophet except when you are permitted for a meal, without awaiting its readiness. But when you are invited, then enter; and when you have eaten, disperse without seeking to remain for conversation. Indeed, that [behavior] was troubling the Prophet, and he is shy of [dismissing] you. But Allāh is not shy of the truth. And when you ask [his wives] for something, ask them from behind a partition. That is purer for your hearts and their hearts. And it is not [conceivable or lawful] for you to harm the Messenger of Allāh or to marry his wives after him, ever. Indeed, that would be in the sight of Allāh an enormity.

53. O you who believe! Enter not the Prophet’s houses, unless permission is given to you for a meal, (and then) not (so early as) to wait for its preparation. But when you are invited, enter, and when you have taken your meal, disperse without sitting for a talk. Verily, such (behaviour) annoys the Prophet, and he is shy of (asking) you (to go); but Allâh is not shy of (telling you) the truth. And when you ask (his wives) for anything you want, ask them from behind a screen: that is purer for your hearts and for their hearts. And it is not (right) for you that you should annoy Allâh’s Messenger, nor that you should ever marry his wives after him (his death). Verily, with Allâh that shall be an enormity.

O Ye who believe! Enter not the dwellings of the Prophet for a meal without waiting for the proper time, unless permission be granted you. But if ye are invited, enter, and, when your meal is ended, then disperse. Linger not for conversation. Lo! that would cause annoyance to the Prophet, and he would be shy of (asking) you (to go); but Allah is not shy of the truth. And when ye ask of them (the wives of the Prophet) anything, ask it of them from behind a curtain. That is purer for your hearts and for their hearts. And it is not for you to cause annoyance to the messenger of Allah, nor that ye should ever marry his wives after him. Lo! that in Allah's sight would be an enormity.