Surah An-Noor Verse 6 - English Translation by Ali Unal
Surah An-Noorوَٱلَّذِينَ يَرۡمُونَ أَزۡوَٰجَهُمۡ وَلَمۡ يَكُن لَّهُمۡ شُهَدَآءُ إِلَّآ أَنفُسُهُمۡ فَشَهَٰدَةُ أَحَدِهِمۡ أَرۡبَعُ شَهَٰدَٰتِۭ بِٱللَّهِ إِنَّهُۥ لَمِنَ ٱلصَّـٰدِقِينَ
As for those who accuse their own wives of adultery but have no witnesses except themselves, such a person must testify four times swearing by God in each oath that he is indeed speaking the truth