Sahih Muslim 1333
Sahih Muslim · Book 15: The Book of Pilgrimage · The wall and the door of the Ka'bah
'A'isha reported:
وَحَدَّثَنَاهُ أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ، قَالَ حَدَّثَنَا عُبَيْدُ اللَّهِ، - يَعْنِي ابْنَ مُوسَى - حَدَّثَنَا شَيْبَانُ ، عَنْ أَشْعَثَ بْنِ أَبِي الشَّعْثَاءِ ، عَنِ الأَسْوَدِ بْنِ يَزِيدَ ، عَنْ عَائِشَةَ ، قَالَتْ سَأَلْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنِ الْحِجْرِ . وَسَاقَ الْحَدِيثَ بِمَعْنَى حَدِيثِ أَبِي الأَحْوَصِ وَقَالَ فِيهِ فَقُلْتُ فَمَا شَأْنُ بَابِهِ مُرْتَفِعًا لاَ يُصْعَدُ إِلَيْهِ إِلاَّ بِسُلَّمٍ وَقَالَ " مَخَافَةَ أَنْ تَنْفِرَ قُلُوبُهُمْ " .
I asked Allah's Messenger (ﷺ) about Hijr, and the rest of the hadith is the same. I also said: Why is it that the door has been made on a higher level, and one cannot (get into it) but with the help of a ladder? The rest of the hadith is the same as reported above and the concluding words are: (I do not change it) out of the apprehension that their hearts may disapprove of it."