Quran 58:15 from Surah Al-Mujaadila on Divine Marvels.
أَعَدَّ ٱللَّهُ لَهُمۡ عَذَابٗا شَدِيدًاۖ إِنَّهُمۡ سَآءَ مَا كَانُواْ يَعۡمَلُونَ
English translation: Allah has prepared Allah has prepared for them a punishment severe Indeed, [they] evil is what they used to do
Transliteration: a'adda al-lahu lahum adhaban shadidan innahum saa ma kanu ya'maluna