﴿ وَٱلَّذِينَ يَرْمُونَ أَزْوَٰجَهُمْ وَلَمْ يَكُن لَّهُمْ شُهَدَآءُ إِلَّآ أَنفُسُهُمْ فَشَهَٰدَةُ أَحَدِهِمْ أَرْبَعُ شَهَٰدَٰتٍۭ بِٱللَّهِ ۙ إِنَّهُۥ لَمِنَ ٱلصَّٰدِقِينَ ﴾

“And as for those who accuse their own wives [of adultery], but have no witnesses except them­selves, let each of these [accusers] call God four times to witness that he is indeed telling the truth,”

(As for those who accuse their wives) of committing adultery (but have no witnesses) for their accusation (except themselves; let the testimony of one of them be four testimonies, (swearing) by Allah) other than Whom there is no god (that he is of those who speak the Truth) about his accusation of his wife;