﴿ فَلَا تَدْعُ مَعَ ٱللَّهِ إِلَٰهًا ءَاخَرَ فَتَكُونَ مِنَ ٱلْمُعَذَّبِينَ ﴾

“Hence, [O man,] do not invoke any other deity side by side with God, lest thou find thyself among those who are made to suffer [on Judgment Day].”

Please check ayah 26:220 for complete tafsir.