وَقَالَ اللَّهُ لَا تَتَّخِذُوا إِلَٰهَيْنِ اثْنَيْنِ ۖ إِنَّمَا هُوَ إِلَٰهٌ وَاحِدٌ ۖ فَإِيَّايَ فَارْهَبُونِ 51
Allah has said: "Take not (for worship) two gods: for He is just One Allah: then fear Me (and Me alone)."