Mecca was conquered by the Muslims in January 630 CE (20th of Ramadan, 8 AH).

In 628 the Meccan tribe of Quraysh and the Muslim community in Medina signed a 10 year truce called the Treaty of Hudaybiyyah.

According to the terms of the treaty of Hudaibiyah, the Arab tribes were given the option of joining either of the parties, the Muslims or Quraish. Should any of these tribes face aggression, the party to which it was allied would have the right to retaliate. As a consequence, Banu Bakr joined Quraish, and Khuza‘ah joined Muhammed. They thus lived in peace for some time; but ulterior motives stretching back to the pre-Islamic period, ignited by unabated fire of revenge, triggered fresh hostilities. Banu Bakr, without concern for the provisions of the treaty, attacked Banu Khuza'a in a place called Al-Wateer in Sha‘ban, in 8 A.H. Quraish helped Banu Bakr with men and arms, taking advantage of the dark night. Pressed by their enemies, the tribesmen of Khuza‘ah sought the Holy Sanctuary, but here too, their lives were not spared, and, contrary to all accepted traditions, Nawfal, the chief of Banu Bakr, chased them in the sanctified area — where no blood should be shed — and massacred his adversaries. Khuza’a at once sent a delegation to Medina to inform the Islamic prophet, Muhammad, of this breach of truce and to seek help from Muslims of Medina being their allies.

Mecca ( /ˈmɛkə/; Arabic: مكة‎, Makkah, pronounced [ˈmækːɐ]) is a city in the Hejaz and the capital of Makkah province in Saudi Arabia. The city is located 70 km (43 mi) inland from Jeddah in a narrow valley at a height of 277 m (909 ft) above sea level. Its resident population in 2012 was 2 million, although visitors more than triple this number every year during Hajj period held in the twelfth Muslim lunar month of Dhu al-Hijjah.

As the birthplace of Muhammad and a site of the composition of the Quran, Mecca is regarded as the holiest city in the religion of Islam and a pilgrimage to it known as the Hajj is obligatory upon all able Muslims. The Hijaz was long ruled by Muhammad's descendants, the sharifs, either as independent rulers or as vassals to larger empires. It was absorbed into Saudi Arabia in 1925. In its modern period, Mecca has seen tremendous expansion in size and infrastructure. Because of this Mecca has lost many thousand years old buildings and archaeological sites. Today, more than 15 million Muslims visit Mecca annually, including several million during the few days of the Hajj. As a result, Mecca has become one of the most cosmopolitan and diverse cities in the Muslim world, although non-Muslims remain prohibited from entering the city.