Muslims believe that God revealed the Qur'an to Muhammad, God's final prophet, through the angel Gabriel, and regard the Qur'an and the Sunnah (words and deeds of Muhammad) as the fundamental sources of Islam. They do not regard Muhammad as the founder of a new religion, but as the restorer of the original monotheistic faith of Abraham, Moses, Jesus, and other prophets. Islamic tradition holds that Jews and Christians distorted the revelations God gave to these prophets by either altering the text, introducing a false interpretation, or both.
Mecca, the holiest city in Islam
Islam includes many religious practices. Adherents are generally required to observe the Five Pillars of Islam, which are five duties that unite Muslims into a community. In addition to the Five Pillars, Islamic law (sharia) has developed a tradition of rulings that touch on virtually all aspects of life and society. This tradition encompasses everything from practical matters like dietary laws and banking to warfare and welfare. Almost all Muslims belong to one of two major denominations, the Sunni (85%) and Shi'a (15%). The schism developed in the late 7th century following disagreements over the religious and political leadership of the Muslim community. Islam is the predominant religion in much of Africa and the Middle East, as well as in major parts of Asia. Large communities are also found in China, the Balkan Peninsula in Eastern Europe and Russia. There are also large Muslim immigrant communities in other parts of the world, such as Western Europe. Of the total world Muslim population, about 20% live in the Arab countries(where Muslims comprise majority populations, with Christian and other religious minorities of differing sizes by country), 30% in the countries of the Indian subcontinent, and 15.6% in Indonesia
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