Sahih al-Bukhari 126

Al-Aswad said that Ibn az-Zubayr said to him, "'A'isha often used to tell you things secretly. What did she tell you about the Ka'ba?" Al-Aswad said, "She told me that the Prophet had said, 'O 'A'isha, if it had not been that your people are still close to disbelief, I would have dismantled the Ka'ba and built into it only two doors: one for people to enter and one by which they would leave.' " That is what Ibn az-Zubayr did.[Later on he became the ruler of the Hijaz.] ['A'isha was his maternal aunt.]