Upon the capture of Jerusalem, it is commonly reported that Umar, the Commander of the Faithful, refused to pray in the Church of the Holy Sepulchre in spite of a treaty. The architecturally similar Dome of the Rock was built on the Temple Mount, which was an abandoned and disused area since 70CE in the 7th century but which had previously been the site of the Jewish Temple in Jerusalem, the most sacred site in Judaism. Umar initially built there a small prayer house which laid the foundation for the later construction of the Al-Aqsa mosque by the Umayyads.