Quran 24:19 from Surah An-Noor on Divine Marvels.
إِنَّ ٱلَّذِينَ يُحِبُّونَ أَن تَشِيعَ ٱلۡفَٰحِشَةُ فِي ٱلَّذِينَ ءَامَنُواْ لَهُمۡ عَذَابٌ أَلِيمٞ فِي ٱلدُّنۡيَا وَٱلۡأٓخِرَةِۚ وَٱللَّهُ يَعۡلَمُ وَأَنتُمۡ لَا تَعۡلَمُونَ
English translation: Indeed those who like that (should) spread the immorality among those who believe for them (is) a punishment painful in the world and the Hereafter And Allah knows while you (do) not know
Transliteration: inna alladhina yuhibbuna an tashi'a al-fahishatu fi alladhina amanu lahum adhabun alimun fi al-dun'ya wal-akhirati wal-lahu ya'lamu wa-antum la ta'lamuna