(25) باب بُنْيَانُ الْكَعْبَةِ
Narrated `Amr bin Dinar and 'Ubaidullah bin Abi Yazid:
In the lifetime of the Prophet (ﷺ) there was no wall around the Ka`ba and the people used to pray around the Ka`ba till `Umar became the Caliph and he built the wall around it. 'Ubaidullah further said, "Its wall was low, so Ibn Az-Zubair built it."
Reference: Sahih al-Bukhari 3830
In-book reference: Book 63, Hadith 56
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 58, Hadith 171