Muslims also claim rights to that land in accordance with the Quran. Contrary to the Jewish claim that this land was promised only to the descendants of Abraham's grandson Jacob (Yisrael), they argue that the Land of Canaan was promised to what they consider the elder son of Abraham, Ishmael, from whom Arabs claim descent. Additionally, Muslims also revere many sites also holy for Biblical Israelites, such as the Cave of the Patriarchs and the Temple Mount. In the past 1,400 years, Muslims have constructed Islamic landmarks on these ancient Israelite sites, such as the Dome of the Rock and the Al-Aqsa Mosque on the Temple Mount, the holiest site in Judaism. This has brought the two groups into conflict over the rightful possession of Jerusalem. Muslim teaching is that Muhammad passed through Jerusalem on his first journey to heaven. Hamas, which governs the Gaza Strip, claims that all of the land of Palestine (the current Israeli and Palestinian territories) is an Islamic waqf that must be governed by Muslims.