An-Nahl 16:51

Waqala Allahu latattakhithoo ilahayni ithnayni innama huwailahun wahidun fa-iyyaya farhaboon

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

Allah has said, “Do not take two gods. He is but One God. So, Me alone you fear.”