Authentic
Muttafaq ‘alayh (Bukhari and Muslim) Sahih al-Bukhari 1584
I asked the Prophet (ﷺ) whether the round wall (near Ka`ba) was part of the Ka`ba. The Prophet (ﷺ) replied in the affirmative. I further said, "What is wrong with them, why have they not included it in the building of the Ka`ba?" He said, "Don't you see that your people (Quraish) ran short of money…
سَأَلْتُ النَّبِيَّ صلى الله عليه وسلم عَنِ الْجَدْرِ أَمِنَ الْبَيْتِ هُوَ قَالَ " نَعَمْ ". قُلْتُ فَمَا لَهُمْ لَمْ يُدْخِلُوهُ فِي الْبَيْتِ قَالَ " إِنَّ قَوْمَكِ قَصَّرَتْ بِهِمُ النَّفَقَةُ ". قُلْتُ…