Translation:

53. O ye who Believe! enter not the Prophet's houses until leave is given you for a meal (and then) not (so early as) to wait for its preparation: but when ye are invited enter; and when ye have taken your meal disperse without seeking familiar talk. Such (behavior) annoys the Prophet: He is ashamed to dismiss you but Allah is not ashamed (to tell you) the truth. And when ye ask (his ladies) for anything ye want ask them from before a screen: that makes for greater purity for your hearts and for theirs. Nor is it right for you that ye should annoy Allah's Apostle or that ye should marry his widows after him at any time. Truly such a thing is in Allah's sight an enormity.

Notes (Tafseer)

3755. The rules of refined social ethics is as necessary to teach to-day as it was with the rude Arabs whom the holy Prophet had to teach in his day. Those mentioned in this verse may be briefly recapitulated thus: (1) Enter not a friend's house without permission; (2) if invited to dine, don't go too early; you are asked to dine, not to wait for the preparation of the food; (3) be there at the time appointed, so that you enter when you are expected and invited; (4) after the meal, don't get familiar with your host, especially if there is a great distance between him and you; (5) don't waste time in tittle-tattle, causing inconvenience and perhaps annoyance to your host; (6) understand what is proper behaviour for you: he may be too polite to ask to depart. All this has a social bearng: respect and delicate consideration for others are among the highest virtues.

3756. The actual manner of showing respect to ladies may be different in different circumstances. But it is an essential principle of good society to show the greatest deference to them. To the "Mothers of the Believers" this respect was due in an exceptional degree.

3757. Considering his position, the holy Prophet deserved to be respected before all other men and nothing should be done to cause him the least harm and annoyance. This applied not only during his life-time, but it applies now, because his teaching and personality are alive to us. It was not fitting that his widows, both for their own position and for the position of the Prophet, should be married by other men after him. And this mark of respect was duly observed in history.

3758. "Annoy": Aza (IV) may equally mean: to vex, to cause hurt or injury, to insult, to ill-treat by slander or unseemly conduct, or hurt the feelings of (some one). The Prophet came with a divine mission to teach and reclaim the world, and he is entitied to the respect of all, even of those who do not consciously acknowledge his mission, for his mission works constantly like the forces of nature. In a minor degree the "Mothers of the Believers" are also entitied to respect.