Sahih al-Bukhari 7263
Sahih al-Bukhari · Book 95: Accepting Information Given by a Truthful Person · Enter not the Prophet ’s (saws) houses unless permission is given to you…”
Narrated `Umar:
حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ عَبْدِ اللَّهِ ، حَدَّثَنَا سُلَيْمَانُ بْنُ بِلاَلٍ ، عَنْ يَحْيَى ، عَنْ عُبَيْدِ بْنِ حُنَيْنٍ ، سَمِعَ ابْنَ عَبَّاسٍ ، عَنْ عُمَرَ ـ رضى الله عنهم ـ قَالَ جِئْتُ فَإِذَا رَسُولُ اللَّهِ صلى الله عليه وسلم فِي مَشْرُبَةٍ لَهُ، وَغُلاَمٌ لِرَسُولِ اللَّهِ صلى الله عليه وسلم أَسْوَدُ عَلَى رَأْسِ الدَّرَجَةِ فَقُلْتُ قُلْ هَذَا عُمَرُ بْنُ الْخَطَّابِ فَأَذِنَ لِي.
I came and behold, Allah's Messenger (ﷺ) was staying on a Mashroba (attic room) and a black slave of Allah's Messenger (ﷺ) was at the top if its stairs. I said to him, "(Tell the Prophet) that here is `Umar bin Al- Khattab (asking for permission to enter)." Then he admitted me.