Surah As-Saffat, ayah 63

إِنَّا جَعَلۡنَٰهَا فِتۡنَةٗ لِّلظَّٰلِمِينَ ٦٣

Innā ja'alnāhā fitnatal liz-zālimīn

Indeed, We have made it a torment for the wrongdoers.