Ibn ‘Abbas said that when the Prophet ordered a man and wife to invoke curses regarding one another, he ordered a man to put his hand on his mouth when he came to the fifth utterance, saying that it would be the deciding one. Nasa’i transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب النكاح / 3322
Hadith Gradingالألبانی:لم تتمّ دراسته | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «صحيح، رواه النسائي (175/6 ح 3502)»