Quran 8:25

وَٱتَّقُواْ فِتۡنَةً۬ لَّا تُصِيبَنَّ ٱلَّذِينَ ظَلَمُواْ مِنكُمۡ خَآصَّةً۬‌ۖ وَٱعۡلَمُوٓاْ أَنَّ ٱللَّهَ شَدِيدُ ٱلۡعِقَابِ ٢٥

Beware of a retribution that may not be limited to the evildoers among you. You should know that ALLAH’s retribution is severe.