Oneness of God, or Allah is One.
There is no God apart from me, a righteous God and a savior. There is none but me! Turn to me and be saved all you ends of the earth; for I am God and there is no other. By myself I have sworn, My mouth has uttered in all integrity a word that will not be revoked. Before me every knee will bow; by me every tongue will swear. They will say of me, 'In the LORD are righteousness and strength.'
( Isaiah 45:21-24, Bible)