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.See:

• Accad (2003): According to Ibn Taymiya, although only some Muslims accept the textual veracity of the entire Bible, most Muslims will grant the veracity of most of it.
• Esposito (1998), pp.6,12
• Esposito (2002b), pp.4–5
• F. E. Peters (2003), p.9

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 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. About 20% of Muslims live in Arab countries, 30% in the Indian subcontinent and 15.6% in Indonesia, the largest Muslim country by population.

Etymology and meaning

main: S-L-M

The word Islam is a verbal noun originating from the triliteral root s-l-m, and is derived from the Arabic verb Aslama, which means "to accept, surrender or submit." Thus, Islam means acceptance of and submission to God, and believers must demonstrate this by worshipping him, following his commands, and avoiding polytheism. The word is given a number of meanings in the Qur'an. In some verses (ayat), the quality of Islam as an internal conviction is stressed: "Whomsoever God desires to guide, He expands his breast to Islam." Other verses connect islām and dīn (usually translated as "religion"): "Today, I have perfected your religion (dīn) for you; I have completed My blessing upon you; I have approved Islam for your religion." Still others describe Islam as an action of returning to God—more than just a verbal affirmation of faith. Another technical meaning in Islamic thought is as one part of a triad of islam, imān (faith), and ihsān (excellence); where it represents acts of worship (`ibādah) and Islamic law (sharia).