Islam (English  /ˈɪzlɑːm/;Arabic: الإسلام‎ al-ʾislām  IPA: [ʔɪsˈlæːm] ( listen)) is a monotheistic and Abrahamic religion articulated by the Qur'an, a text considered by its adherents to be the verbatim word of God (Arabic: الله‎ Allāh), and by the teachings and normative example (called the Sunnah and composed of Hadith) of Muhammad, considered by them to be the last prophet of God. An adherent of Islam is called a Muslim.

Muslims believe that God is one and incomparable and the purpose of existence is to love and serve God. Muslims also believe that Islam is the complete and universal version of a primordial faith that was revealed at many times and places before, including through Abraham, Moses and Jesus, whom they consider prophets. They maintain that previous messages and revelations have been partially changed or corrupted over time, but consider the Qur'an to be both the unaltered and the final revelation of God. Religious concepts and practices include the five pillars of Islam, which are basic concepts and obligatory acts of worship, and following Islamic law, which touches on virtually every aspect of life and society, providing guidance on multifarious topics from banking and welfare, to warfare and the environment.

Religion is a collection of cultural systems, belief systems, and worldviews that relate humanity to spirituality and, sometimes, to moral values. Many religions have narratives, symbols, traditions and sacred histories that are intended to give meaning to life or to explain the origin of life or the universe. They tend to derive morality, ethics, religious laws or a preferred lifestyle from their ideas about the cosmos and human nature.

The word religion is sometimes used interchangeably with faith or belief system, but religion differs from private belief in that it has a public aspect^{[citation needed]}. Many religions have organized behaviors, clergy, a definition of what constitutes adherence or membership, congregations of laity, regular meetings or services for the purposes of veneration of a deity or for prayer, holy places (either natural or architectural), and/or scriptures. The practice of a religion may also include sermons, commemoration of the activities of a god or gods, sacrifices, festivals, feasts, trance, initiations, funerary services, matrimonial services, meditation, music, art, dance, public service, or other aspects of human culture. However, there are examples of religions for which some or many of these aspects of structure, belief, or practices are absent.