ذَٰلِكَ بِأَنَّهُمْ شَآقُّوا ٱللَّهَ وَرَسُولَهُۥ ۚ وَمَن يُشَاقِقِ ٱللَّهَ وَرَسُولَهُۥ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلْعِقَابِ

Thalika bi-annahum shaqqoo Allahawarasoolahu waman yushaqiqi Allaha warasoolahufa-inna Allaha shadeedu alAAiqab

That is because they opposed Allāh and His Messenger. And whoever opposes Allāh and His Messenger - indeed, Allāh is severe in penalty.