Sahih al-Bukhari Book 65, Hadith 312
I said, "O Allah's Messenger (ﷺ)! Good and bad persons enter upon you, so I suggest that you order the
mothers of the Believers (i.e. your wives) to observe veils." Then Allah revealed the Verses of Al-
Hijab.
`Aisha said, "Allah's Messenger (ﷺ) used to take the permission of that wife with whom he was supposed to stay overnight if he wanted to go to one other than her, after this Verse was revealed:-- "You (O Muhammad) can postpone (the turn of) whom you will of them (your wives) and you may receive any (of them) whom you will; and there is no blame on you if you invite one whose turn you have set aside (temporarily). (33.51) I asked Aisha, "What did you use to say (in this case)?" She said, "I used to say to him, "If I could deny you the permission (to go to your other wives) I would not allow your favor to be bestowed on any other person."
When Allah's Messenger (ﷺ) married Zainab bint Jahsh, he invited the people to a meal. They took the meal and remained sitting and talking. Then the Prophet (showed them) as if he is ready to get up, yet they did not get up. When he noticed that (there was no response to his movement), he got up, and the others too, got up except three persons who kept on sitting. The Prophet (ﷺ) came back in order to enter his house, but he went away again. Then they left, whereupon I set out and went to the Prophet (ﷺ) to tell him that they had departed, so he came and entered his house. I wanted to enter along with him, but he put a screen between me and him. Then Allah revealed: 'O you who believe! Do not enter the houses of the Prophet...' (33.53)