4:116
إِنَّ ٱللَّهَ لَا يَغْفِرُ أَن يُشْرَكَ بِهِۦ وَيَغْفِرُ مَا دُونَ ذَٰلِكَ لِمَن يَشَآءُ ۚ وَمَن يُشْرِكْ بِٱللَّهِ فَقَدْ ضَلَّ ضَلَـٰلًۢا بَعِيدًا
inna l-laha lā yaghfiru an yush'raka bihi wayaghfiru mā dūna dhālika liman yashāu waman yush'rik bil-lahi faqad ḍalla ḍalālan baʿīdan
God does not forgive the worship of others beside Him- though He does forgive whoever He will for lesser sins- for whoever does this has gone far, far astray.
Verily! Allâh forgives not (the sin of) setting up partners (in worship) with Him, but He forgives whom He wills sins other than that, and whoever sets up partners in worship with Allâh, has indeed strayed far away.