Jami` at-Tirmidhi 875
جامع الترمذي#875SahihAl-Aswad bin Yazid narrated that:Ibn Az-Zubair said to him: "Narrated to me from what the Mother of the Believers used to (secretly) inform you about" - meaning Aishah - so he said: "She narrated to me that the Messenger of Allah said: 'Had your people not been still close to the pre-Islamic period of ignorance, then I would demolish the Ka'bah and rebuild it with two doors.'" He said: "So when Ibn Az-Zubair came to power he demolished it and rebuilt it with two doors
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 9:68