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Tawḥīd (Arab., verb. noun of waḥḥada, ‘make one’). Asserting the oneness of God, the supreme duty, and passion, of Islamic theology. His unity must be affirmed, in strenuous negation of all dualism, idolatry, and superstition—i.e. of shirk. Qurʾān 112, the Sūra of Unity, is the classic statement. In Sūfī thought and poetry, tawḥīd means the unitive state in which the devotee transcends individuation in fanāʾ.