The Great Mosque includes other important significant sites, such as the Black Stone, the Zamzam Well, Maqam Ibrahim, and the hills of Safa and Marwa.[17] According to Islamic tradition in the Quran, Abraham, together with his son Ismael, raised the foundations of a house,[23] which has been identified by commentators as the Kaaba.After placing the Black Stone in the Eastern corner of the Kaaba, Abraham reportedly received a revelation in which God told the aged prophet that he should now go and proclaim the pilgrimage to mankind, so that men may come both from Arabia and from lands far away, on camel and on foot.[24] Upon Muhammad's victorious return to Mecca in 630 CE, Ali broke the idols in and around the Kaaba,[25] similar to what, according to the Quran, Abraham did in his homeland.[31][32] The spread of Islam in the Middle East and the influx of pilgrims required an almost complete rebuilding of the site which included adding more marble and three more minarets.This renovation resulted in the replacement of the flat roof with domes decorated with calligraphy internally, and the placement of new support columns which are acknowledged as the earliest architectural features of the present mosque.In the renovation of the mosque, a new stone arcade was added, three more minarets (bringing the total to seven) were built, and the marble flooring was retiled.[citation needed] In addition, the King Fahd expansion includes 6 dedicated prayer halls for people with disabilities.These halls have ramps to facilitate entry and exit with wheelchairs, as well as dedicated paths and free electric and manual carts for their use.Imams:[53] The Great Mosque is the main setting for the Hajj and Umrah pilgrimages[55] that occur in the month of Dhu al-Hijja in the Islamic calendar and at any time of the year, respectively.