Qur'an 16:51

۞ وَقَالَ ٱللَّهُ لَا تَتَّخِذُوٓا۟ إِلَـٰهَيْنِ ٱثْنَيْنِ ۖ إِنَّمَا هُوَ إِلَـٰهٌ وَٰحِدٌ ۖ فَإِيَّـٰىَ فَٱرْهَبُونِ

“And Allāh has said, "Do not take for yourselves two deities. He [i.e., Allāh] is but one God, so fear only Me."”

An-Nahl 16:51 · Saheeh International