Tawhid (Arabic: توحيد‎ tawḥīd, meaning "[doctrine of the] oneness [of God]"; also transliterated as Tawheed and Tauheed) is the indivisible oneness concept of monotheism in Islam. Tawhid is the religion's most fundamental concept and holds that God (Allah, literally Al-Ilāh "the God") is One (Al-ʾAḥad) and Single (Al-Wāḥid). Because of the "principle of Tawhid the Islamic belief in God is considered Unitarian."Tawhid constitutes the foremost article of the Muslim profession of faith.