The Islamization of Jerusalem refers to the process through which Jerusalem and its Old City acquired an Islamic character and, eventually, a significant Muslim presence. The foundation for Jerusalem's Islamization was laid by the Muslim conquest of the Levant, and began shortly after the city was besieged and captured in 638 CE by the Rashidun Caliphate under Umar ibn al-Khattab, the second Rashidun caliph. The second wave of Islamization occurred after the fall of the Kingdom of Jerusalem, a Christian state that was established after the First Crusade, at the Battle of Hattin in 1187. The eventual fall of the Crusader states by 1291 led to a period of almost-uninterrupted Muslim rule that lasted for seven centuries, and a dominant Islamic culture was consolidated in the region during the Ayyubid, Mamluk and early Ottoman periods. Beginning in the late Ottoman era, Jerusalem’s demographics turned increasingly multicultural, and regained a Jewish-majority character during the late-19th and early-20th centuries that had not been seen since the Roman period, which largely ended the Jewish presence in the region.Shlomo Slonim, Jerusalem in America's Foreign Policy, 1947-1997, Martinus Nijhoff Publishers 1999 p.13

The remodulation was grounded on a foundational narrative in early Islamic texts, themselves drawing on Persian, Jewish and Christian traditionsKhoury p.57:’Persian, Jewish, and Christian-Byzantine elements were present in Arabia itself prior to the appearance of Islam, and were integrated into Arab history, tradition, and culture to become part of the collective heritage and memories that were recorded in the Islamic historical writings of later years. A particularly rich repertoire of Arab myths and memories, as well as architecture, thus preceded the appearance of the first Islamic monument. that emphasized the city's cosmological significance within God's creation.Zayde Antrim, Routes and Realms: The Power of Place in the Early Islamic World,Oxford University Press, 2012 p.48 At the time of the Muslim conquest of the city, the victors encountered many traditions concerning the Temple Mount: Muslim beliefs regarding David (the miḥrāb Dāwūd in the Quran 38:20–21) and Solomon; shared beliefs that from there, on Mount Moriah (the “mountain” that the Temple Mount sits upon), Adam had been born and died;Grabar pp.38-39 shared beliefs that Mount Moriah was also where Abraham almost sacrificed one of his sons; and they absorbed the Christian belief that Zechariah, the father of John the Baptist (in the Quran: 'prophet of the Jewish scholars'), raised on the site a mihrab to Mary, the mother of Jesus.Khoury, p.58 These and other such traditions affected the outlay of Islamic buildings. It has also been argued that the central role that Jerusalem assumed in Islamic belief began with Muhammad's instruction to his followers to observe the qibla by facing the direction of Jerusalem during their daily prostrations in prayer. After 13 years (or 16 months,Yohanan Friedmann (2003). Tolerance and coercion in Islam: interfaith relations in the Muslim tradition. Cambridge University Press. p. 31. depending on the source), due to both divine guidanceSura 2 (Al-Baqara), ayah 144, Quran 2:144 and practical matters (souring of relationship with the Jews and/or Muhammad’s frustration with the city and its people) the direction of prayer was changed to Mecca in present-day Saudi Arabia.Yitzhak Reiter, Marwan Abu Khalaf,'Jerusalem’s Religious Significance,' at Palestine-Israel Journal, Vol.8, No.1, 2001. The Umayyad construction of the Dome of the Rock was interpreted by later hostile Abbasid historians as an attempt to redirect the Hajj from Mecca to Jerusalem.Nuha N. N. Khoury, The Dome of the Rock, the Kaʿba, and Ghumdan: Arab Myths and Umayyad Monuments, in Muqarnas, Vol. 10, Essays in Honor of Oleg Grabar, Brill (1993), pp. 57-65, p.58. "The Abbasid historian al Ya'qubi (d. 874) accused Abd al-Malik of attempting to divert the pilgrimage from Mecca to Jerusalem, thus characterizing the Umayyad Dome of the Rock as a rival to the Kaaba."

First Islamization of Jerusalem under the Caliphates In 638 CE, the Islamic Caliphate extended its dominion to Jerusalem.Jerusalem: Illustrated History Atlas Martin Gilbert, Macmillan Publishing, New York, 1978, p. 7 With the Arab conquest of the region, Jews were allowed back into the city. The majority population of Jerusalem during the time of Arab conquest was Christian. In the aftermath the process of cultural Arabization and Islamization took place, combining immigration to Palestine with the adoption of Arabic language and conversion of a part of the local population to Islam.Lauren S. Bahr; Bernard Johnston (M.A.); Louise A. Bloomfield (1996). Collier's encyclopedia: with bibliography and index. Collier's. p. 328. Retrieved 19 December 2011. According to several Muslim scholars, including Mujir ad-Din, al-Suyuti, and al-Muqaddasi, the mosque was reconstructed and expanded by the caliph Abd al-Malik in 690 along with the Dome of the Rock.le Strange, Guy. (1890). Palestine under the Moslems, pp.80–98. In planning his magnificent project on the Temple Mount, which in effect would turn the entire complex into the Haram al-Sharif ("the Noble Sanctuary"), Abd al-Malik wanted to replace the slipshod structure described by Arculf with a more sheltered structure enclosing the qibla, a necessary element in his grand scheme. The Jewish background in the construction of the Dome of the Rock is commonly accepted by historians. A number of scholars consider the construction of the Dome as the Muslim desire to rebuild Solomon's Temple or Mihrab Dawud. Grabar and Busse claimed that this was the primary Islamic legitimization for the sanctity of the Dome of the Rock, while the al-mi'raj traditions were transferred to the rock only later.Medieval Jerusalem and Islamic Worship: Holy Places, Ceremonies, Pilgrimage By Amikam Elad P:161 An early Islamic tradition from the converted rabbi Ka'ab al-Ahbar states "Ayrusalaim which means Jerusalem and the Rock which means the Temple. I shall send you my servant Abd al-Malik who will build you and adorn you. I shall surely restore you to Bayt Al Maqdis, its first kingdom and I shall crown it with gold, silver and gems. And I shall surely send you my creatures. And I shall surely invest my throne of glory upon the rock, since I am the sovereign God, and David is the king of the Children of Israel."Medieval Jerusalem and Islamic Worship: Holy Places, Ceremonies, Pilgrimage By Amikam Elad P:162-3

Under the Rashidun Caliphate The Rashidun caliph Umar ibn al-Khattab signed a treaty with Miaphysite Christian Patriarch Sophronius, assuring him that Jerusalem's Christian holy places and population would be protected under Muslim rule. When led to pray at the Church of the Holy Sepulchre, the holiest site for Christians, the caliph Umar declined to pray within the church in order not to establish a precedent that might be exploited later by some Muslims to convert the church into a mosque. He prayed outside the church, where the Mosque of Umar (Omar) stands to this day, opposite the entrance to the Church of the Holy Sepulchre.

However, some of the most prominent Orientalists and historians of Early Islam, such as Heribert Busse, Moshe Sharon and Oleg Grabar, doubt that caliph Umar ibn al-Khattab had ever visited Jerusalem. The earliest Islamic sources attribute conquest of Jerusalem to a commander by the name Khālid b. Thābit al-Fahmi, whereas Umar appears only in sources written some two centuries after Muslim conquest of the city.

According to the Gaullic bishop Arculf, who lived in Jerusalem from 679 to 688, the Mosque of Umar was a rectangular wooden structure built over ruins which could accommodate 3,000 worshipers.

Under the Umayyad and Abbasid Caliphate The Umayyad caliph Abd al-Malik commissioned the construction of the Dome of the Rock in the late 7th century. The 10th-century historian al-Muqaddasi writes that Abd al-Malik built the shrine in order to "compete in grandeur" with Jerusalem's monumental churches. Over the next four hundred years Jerusalem's prominence diminished as Arab powers in the region jockeyed for control.

Jerusalem was called Iliya and later al-Bayt al-Muqaddas which comes from Hebrew Bait ha-Mikdash (בית המקדש). Name Iliya originated from Latin Aelia Capitolina, but Muslims apparently believed that the name was given after the Prophet Elijah.

Under the Fatimid Caliphate In 1099, The Fatimid ruler expelled the native Christian population before Jerusalem was conquered by the Crusaders, who massacred most of its Muslim and Jewish inhabitants when they took the solidly defended city by assault, after a period of siege; later the Crusaders created the Kingdom of Jerusalem. By early June 1099 Jerusalem’s population had declined from 70,000 to less than 30,000.

Second Islamization of Jerusalem

Under the Ayyubid dynasty In 1187, the city was wrested from the Crusaders by Saladin who permitted Jews and Muslims to return and settle in the city. Under the Ayyubid dynasty of Saladin, a period of huge investment began in the construction of houses, markets, public baths, and pilgrim hostels as well as the establishment of religious endowments. However, for most of the 13th century, Jerusalem declined to the status of a village due to city's fall of strategic value and Ayyubid internecine struggles.

Under the Mamluk Sultanate In 1244, Jerusalem was sacked by the Khwarezmian Tartars, who decimated the city's Christian population and drove out the Jews.Jerusalem: Illustrated History Atlas Martin Gilbert, Macmillan Publishing, New York, 1978, p.25. The Khwarezmian Tartars were driven out by the Ayyubids in 1247. From 1250 to 1517, Jerusalem was ruled by the Mamluks. During this period of time many clashes occurred between the Mamluks on one side and the crusaders and the Mongols on the other side. The area also suffered from many earthquakes and black plague.

Islamization of Jerusalem under Jordanian rule

Between 1948 and 1967, following the expulsion of the Jewish residents during the war, Jordan undertook the systematic destruction of the Jewish Quarter including many synagogues. Under Jordanian rule of East Jerusalem, all Israelis (irrespective of their religion) were forbidden from entering the Old City and other holy sites.Martin Gilbert, Jerusalem in the Twentieth Century (Pimlico 1996), p254. Between 40,000 and 50,000 tombstones from ancient Mount of Olives Jewish Cemetery were smashed, ransacked, and desecrated, or used as building material.Meron Benvenisti, City of Stone: The Hidden History of Jerusalem P: 241

Ghada Hashem Talhami states that during its nineteen years of rule, the government of Jordan took actions to accentuate the spiritual Islamic status of Jerusalem. Raphael Israeli, an Israeli historian, argues that the "destruction by the Jordanians of the Jewish Quarter and its many synagogues, including the beautiful ancient synagogue of the Old City known as Khurvat Rabbi Yehuda Hehasid, went a long way to de-Judaize much of the millennia-old Jewish holdings on Jerusalem."