When Messenger of Allah 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) (Using translation from Bukhārī 4791)
لَمَّا تَزَوَّجَ النَّبِيُّ ﷺ زَيْنَبَ بِنْتَ جَحْشٍ دَعَا الْقَوْمَ فَطَعِمُوا ثُمَّ جَلَسُوا يَتَحَدَّثُونَ قَالَ فَأَخَذَ كَأَنَّهُ يَتَهَيَّأُ لِلْقِيَامِ فَلَمْ يَقُومُوا فَلَمَّا رَأَى ذَلِكَ قَامَ مَنْ قَامَ مِنَ الْقَوْمِ وَقَعَدَ ثَلَاثَةٌ قَالَ وَإِنَّ النَّبِيَّ ﷺ جَاءَ لَيَدْخُلَ فَإِذَا الْقَوْمُ جُلُوسٌ ثُمَّ إِنَّهُمْ قَامُوا فَانْطَلَقُوا فَجِئْتُ فَأَخْبَرْتُ النَّبِيَّ ﷺ أَنَّهُمْ قَدِ انْطَلَقُوا فَجَاءَ حَتَّى دَخَلَ فَذَهَبْتُ أَدْخُلُ فَأَلْقَى الْحِجَابَ بَيْنِي وَبَيْنَهُ وَأَنْزَلَ اللهُ ﷻ {يَا أَيُّهَا الَّذِينَ آمَنُوا لَا تَدْخُلُوا بُيُوتَ النَّبِيِّ إِلَّا أَنْ يُؤْذَنَ لَكُمْ إِلَى طَعَامٍ غَيْرَ نَاظِرِينَ إِنَاهُ} [الأحزاب 53] إِلَى {إِنَّ ذَلِكُمْ كَانَ عِنْدَ اللهِ عَظِيمًا} [الأحزاب 53]