﴿ ذَٰلِكَ بِأَنَّهُمْ شَآقُّوا۟ ٱللَّهَ وَرَسُولَهُۥ ۚ وَمَن يُشَاقِقِ ٱللَّهَ وَرَسُولَهُۥ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ ﴾

“This, because they have cut themselves off from God and His Apostle: and as for him who cuts himself off from God and His Apostle - verily, God is severe in retribution.”

(That) fighting (is because they opposed Allah and His messenger) in relation to Religion. (Whoso opposeth Allah and His messenger) in Religion, ((for him) lo! Allah is severe in punishment) when He punishes.