Al-Ahzab 33:30

يَٰنِسَآءَ ٱلنَّبِيِّ مَن يَأۡتِ مِنكُنَّ بِفَٰحِشَةٖ مُّبَيِّنَةٖ يُضَٰعَفۡ لَهَا ٱلۡعَذَابُ ضِعۡفَيۡنِۚ وَكَانَ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٗا 30

O wives of the Prophet, whoever of you should commit a clear immorality - for her the punishment would be doubled two fold, and ever is that, for Allah, easy