Surah Ash-Shu'ara, Verse 213

فَلَا تَدۡعُ مَعَ ٱللَّهِ إِلَٰهًا ءَاخَرَ فَتَكُونَ مِنَ ٱلۡمُعَذَّبِينَ٢١٣

falā tadʿu maʿa l-lahi ilāhan ākhara fatakūna mina l-muʿadhabīna

So do not invoke with Allāh another deity and [thus] be among the punished.