This dome is located above the Mastaba of Musa, in the middle of the western courtyards of the blessed Al-Aqsa Mosque, between Bab al-Silsilah in the west and the Nahwiyya Dome in the east.

It was built by the righteous King Najm al-Din Ayyub in the year 647 AH / 1249 AD for ascetics to worship there. It was previously called the Dome of the Tree, in relation to a huge palm tree that was next to it. It is also called the wide dome.

It is a large square room, six meters long and six meters wide, in which there are six windows, topped with a dome, and it has a mihrab projecting outward, and a northern entrance, and the mastaba that surrounds it has another mihrab from a high wall .

Today, the dome is used as a house for memorizing the Holy Qur'an, as the first house for the Holy Qur'an in Palestine was opened in it, and it still graduates batches of students who are learning the rules of intonation there.