The structure and its immediate precincts in Mecca that also house a large mosque are referred to in the Qur’an and subsequently in Muslim tradition as the House of God (bayt Allah) and the sacred Mosque (masjid al hayam). The Ka’ba is the point of orientation for Muslims when they pray, and it is also the focal point of the Pilgrimage (Hajj) as well as the umra (minor pilgrimage). The Hajj takes place over a fixed period in the prescribed month, whereas the umra may be undertaken at any other time.