9:80
ٱسۡتَغۡفِرۡ لَهُمۡ أَوۡ لَا تَسۡتَغۡفِرۡ لَهُمۡ إِن تَسۡتَغۡفِرۡ لَهُمۡ سَبۡعِینَ مَرَّةࣰ فَلَن یَغۡفِرَ ٱللَّهُ لَهُمۡۚ ذَ ٰلِكَ بِأَنَّهُمۡ كَفَرُوا۟ بِٱللَّهِ وَرَسُولِهِۦۗ وَٱللَّهُ لَا یَهۡدِی ٱلۡقَوۡمَ ٱلۡفَـٰسِقِینَ
Ask forgiveness for them (O Muhammad), or ask not forgiveness for them; though thou ask forgiveness for them seventy times Allah will not forgive them. That is because they disbelieved in Allah and His messenger, and Allah guideth not wrongdoing folk.
— Mohammed Marmaduke William Pickthall
istaghfir lahum aw laa tastaghfir lahum in tastaghfir lahum sab'eena marratan falany yaghfiral laahu lahum; zaalika bi annahum kafaroo billaahi wa Rasoolih; wallaahu laa yahdil qawmal faasiqeen