The reciter: 'Ubayd ibn Isma'il narrated to us, Abu Usamah narrated to us from Hisham from his father from 'A'ishah (may Allah be pleased with her) who said:
Allah's Messenger (ﷺ) said to me, "Were your people not close to the Pre-Islamic period of ignorance, I would have demolished the Ka`ba and would have rebuilt it on its original foundations laid by Abraham (for Quraish had curtailed its building), and I would have built a back door (too)."
قال لي رسول الله صلى الله عليه وسلم لولا حداثة قومك بالكفر لنقضت البيت ثم لبنيته على أساس إبراهيم عليه السلام فإن قريشاً استقصرت بناءه وجعلت له خلفا Sahih al-Bukhari 1585 Abu Mu'awiyah said: Hisham narrated to us, "khalifa" means a door.