Tawhid ( , meaning the oneness [of God]"; also transliterated as Tawheed and Towheed) is the indivisible oneness concept of monotheism in Islam. Tawhid is the religion's most fundamental concept and holds that God (Allah, literally Al-Ilah "the God") is One () and Single (). Because of the "principle of Tawhid the Islamic belief in God is considered Unitarian."