Quran 33:30 from Surah Al-Ahzaab on Divine Marvels.
يَٰنِسَآءَ ٱلنَّبِيِّ مَن يَأۡتِ مِنكُنَّ بِفَٰحِشَةٖ مُّبَيِّنَةٖ يُضَٰعَفۡ لَهَا ٱلۡعَذَابُ ضِعۡفَيۡنِۚ وَكَانَ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٗا
English translation: O wives (of) the Prophet Whoever commits from you immorality clear will be doubled for her the punishment two fold And that is And that is for Allah easy
Transliteration: yanisaa al-nabiyi man yati minkunna bifahishatin mubayyinatin yuda'af laha al-'adhabu di'fayni wakana dhalika ala al-lahi yasiran