Surah Al-Anfal, ayah 13

ذَٰلِكَ بِأَنَّهُمۡ شَآقُّواْ ٱللَّهَ وَرَسُولَهُۥۚ وَمَن يُشَاقِقِ ٱللَّهَ وَرَسُولَهُۥ فَإِنَّ ٱللَّهَ شَدِيدُ ٱلۡعِقَابِ ١٣

Dhālika bi annahum shāqqullāha warasūlahū waman yushāqiqillāha warasūlahū fa innallāha shadīdul-'iqāb

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