استَغفِر لَهُم أَو لا تَستَغفِر لَهُم إِن تَستَغفِر لَهُم سَبعينَ مَرَّةً فَلَن يَغفِرَ اللَّهُ لَهُم ۚ ذٰلِكَ بِأَنَّهُم كَفَروا بِاللَّهِ وَرَسولِهِ ۗ وَاللَّهُ لا يَهدِي القَومَ الفاسِقينَ

Ask forgiveness for them, [O Muhammad], or do not ask forgiveness for them. If you should ask forgiveness for them seventy times - never will Allah forgive them. That is because they disbelieved in Allah and His Messenger, and Allah does not guide the defiantly disobedient people.