Surah Al-Ahzaab, Verse 53
Translation — Sahih International
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 Allah 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 Allah or to marry his wives after him, ever. Indeed, that would be in the sight of Allah an enormity.
Source
Kur'an-ı Kerim, Ahzâb Suresi 33:53
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/33-suresi-53-ayet