Surah An-Noor Verse 6 - English Translation by Ahmed Ali
Surah An-Noorوَٱلَّذِينَ يَرۡمُونَ أَزۡوَٰجَهُمۡ وَلَمۡ يَكُن لَّهُمۡ شُهَدَآءُ إِلَّآ أَنفُسُهُمۡ فَشَهَٰدَةُ أَحَدِهِمۡ أَرۡبَعُ شَهَٰدَٰتِۭ بِٱللَّهِ إِنَّهُۥ لَمِنَ ٱلصَّـٰدِقِينَ
Those who accuse their wives and do not have any witnesses except themselves, should swear four times in the name of God, the testimony of each such person being that he is speaking the truth