Sahih al-Bukhari 6250
Sahih al-Bukhari · Book 79: Asking Permission · Asking, "Who is that?"
Narrated Jabir:
حَدَّثَنَا أَبُو الْوَلِيدِ، هِشَامُ بْنُ عَبْدِ الْمَلِكِ حَدَّثَنَا شُعْبَةُ ، عَنْ مُحَمَّدِ بْنِ الْمُنْكَدِرِ ، قَالَ سَمِعْتُ جَابِرًا ـ رضى الله عنه ـ يَقُولُ أَتَيْتُ النَّبِيَّ صلى الله عليه وسلم فِي دَيْنٍ كَانَ عَلَى أَبِي فَدَقَقْتُ الْبَابَ فَقَالَ " مَنْ ذَا ". فَقُلْتُ أَنَا. فَقَالَ " أَنَا أَنَا ". كَأَنَّهُ كَرِهَهَا.
I came to the Prophet (ﷺ) in order to consult him regarding my father's debt. When I knocked on the door, he asked, "Who is that?" I replied, "I" He said, "I, I?" He repeated it as if he disliked it.