وَٱلَّذِينَ يَرۡمُونَ أَزۡوَٰجَهُمۡ وَلَمۡ يَكُن لَّهُمۡ شُهَدَآءُ إِلَّآ أَنفُسُهُمۡ فَشَهَٰدَةُ أَحَدِهِمۡ أَرۡبَعُ شَهَٰدَٰتِۭ بِٱللَّهِ إِنَّهُۥ لَمِنَ ٱلصَّـٰدِقِينَ
Wallazeena yarmoona azwaajahum wa lam yakul lahum shuhadaaa'u illaaa anfusuhum fashahaadatu ahadihim arb'u shahaadaatim billaahi innahoo laminas saadiqeen
English Translation
And those who accuse their wives [of adultery] and have no witnesses except themselves - then the witness of one of them [shall be] four testimonies [swearing] by Allah that indeed, he is of the truthful
— Saheeh International