For other uses see Muslim (disambiguation).
This day have I perfected your religion for you, completed My favour upon you, and have chosen for you Islam as your religion.The Qur'an describes many Biblical prophets and messengers as Muslim: Adam, Noah (Arabic: Nuh), Moses and Jesus and his apostles. The Qur'an states that these men were Muslims because they submitted to God, preached his message and upheld his values. Thus, in Surah 3:52 of the Qur'an, Jesus’ disciples tell Jesus, "We believe in God; and you be our witness that we submit and obey (wa ashahadu bil-muslimūna)."
Muslims consider making ritual prayer five times a day a religious duty (fard) (see the section on Ismāˤīlīs below for exceptions); these five prayers are known as fajr, dhuhr, , maghrib and . There is also a special Friday prayer called jumuˤah. Currently, the number of Muslims is estimated to be between 1.25 and 1.84 billion.  
See main article: S-L-M.
Arabic muslimun is the stem IV participle of the triliteral S-L-M "to be whole, intact". A literal translation would be "one who wants or seeks wholeness", where "wholeness" translates islāmun. In a religious sense, Al-Islām translates to "faith, piety", and Muslim to "one who has (religious) faith or piety".
The feminine form of muslimun is muslimatun (Arabic: مسلمة).
Until at least the mid 1960s, many English-language writers used the term Mohammedans or Mahometans. Muslims argue that the terms are offensive because they allegedly imply that Muslims worship Muhammad rather than God.
English writers of the 19th century and earlier sometimes used the words Mussulman, Musselman, or Mussulmaun. Variant forms of this word are still used by many Indo-European languages. These words are similar to the Turkish, Bosnian, Kurdish, Persian, French, Russian, Spanish, Italian, Hindi and Portuguese words for "Muslim".
Most Muslims accept as a Muslim anyone who has publicly pronounced the Shahadah (declaration of faith) which states, "There is no god except God and Muhammad is His Messenger." Currently, there are between one and two billion Muslims, making it the second largest religion in the world.
The Arabs of the desert say, "We believe." (tu/minu) Say thou: Ye believe not; but rather say, "We profess Islam;" (aslamna) for the faith (al-imanu) hath not yet found its way into your hearts. But if ye obey [God] and His Apostle, he will not allow you to lose any of your actions: for [God] is Indulgent, Merciful ('The Koran 49:14, Rodwell).
According to the academician Carl Ernst, contemporary usage of the terms "Islam" and "Muslim" for the faith and its adherents is a modern innovation. As shown in the Quranic passage cited above, early Muslims distinguished between the Muslim, who has "submitted" and does the bare minimum required to be considered a part of the community, and the mu'min, the believer, who has given himself or herself to the faith heart and soul. Ernst writes:
"The Arabic term Islam itself was of relatively minor importance in classical theologies based on the Qur'an. If one looks at the works of theologians such as the famous al-Ghazali (d. 1111), the key term of religious identity is not Islam but iman (faith), and the one who possesses it is the mu'min (believer). Faith is one of the major topics of the Qur'an; it is mentioned hundreds of times in the sacred text. In comparison, Islam is a relatively less common term of secondary importance; it only occurs eight times in the Qur'an. Since, however, the term Islam had a derivative meaning relating to the community of those who have submitted to God, it has taken on a new political significance, especially in recent history."