Someone asked, "Abu Abdul-Rahman, regarding the Mutalaineen, are they separated from one another?"He replied, "Yes. Glory be to Allah. The first person to ask about this matter was so-and-so, son of so-and-so. He said, 'Messenger of Allah, tell me'" — and Amr did not say "Tell me about" — "'if a man among us sees his wife committing immorality, what is he to do? If he speaks of it, he speaks of a tremendous matter,'" and Amr said, "'he commits a tremendous matter, and if he keeps silent, he keeps silent over the like of it.' The Prophet did not answer him.Sometime later, the man came back to him and said, 'The matter I asked you about has now befallen me.' So Allah revealed these verses of Surah an-Nur, "And those who accuse their wives" until His statement, "and the fifth oath shall be that the wrath of Allah be upon her if he is among the truthful" [Nur 24:6–9].He began with the man, admonishing him, reminding him, and informing him that the punishment of this world is lighter than the punishment of the Hereafter. The man said, 'By the One who sent you with the truth, I have not lied.' Then he turned to the woman, admonishing her and reminding her. She said, 'By the One who sent you with the truth, he is indeed a liar.'So he began with the man, who bore witness four times by Allah that he was among the truthful, and the fifth time that the curse of Allah be upon him if he were among the liars. Then he turned to the woman, who bore witness four times by Allah that he was among the liars, and the fifth time that the wrath of Allah be upon her if he were among the truthful. Then he separated the two of them."
أخبرنا عمرو بن علي ومحمد بن المثنى قالا حدثنا يحيى بن سعيد قال حدثنا عبد الملك بن أبي سليمان قال سمعت سعيد بن جبير يقول سئلت عن المتلاعنين في إمارة ابن الزبير أيفرق بينهما فما دريت ما أقول فقمت من مقامي إلى منزل
يا أبا عبد الرحمن المتلاعنين أيفرق بينهما قال نعم سبحان الله إن أول من سأل عن ذلك فلان بن فلان فقال يا رسول الله أرأيت ولم يقل عمرو أرأيت الرجل منا يرى على امرأته فاحشة إن تكلم فأمر عظيم وقال عمرو أتى أمرا عظيما وإن سكت سكت على مثل ذلك فلم يجبه فلما كان بعد ذلك أتاه فقال إن الأمر الذي سألتك ابتليت به فأنزل الله عز وجل هؤلاء الآيات في سورة النور {والذين يرمون أزواجهم} حتى بلغ {والخامسة أن غضب الله عليها إن كان من الصادقين} فبدأ بالرجل فوعظه وذكره وأخبره أن عذاب الدنيا أهون من عذاب الآخرة فقال والذي بعثك بالحق ما كذبت ثم ثنى بالمرأة فوعظها وذكرها فقالت والذي بعثك بالحق إنه لكاذب فبدأ بالرجل فشهد أربع شهادات بالله إنه لمن الصادقين والخامسة أن لعنة الله عليه إن كان من الكاذبين ثم ثنى بالمرأة فشهدت أربع شهادات بالله إنه لمن الكاذبين والخامسة أن غضب الله عليها إن كان من الصادقين ففرق بينهما
Muslim narrated it in the chapter on lian, 4/1493, from the hadith of Abdul-Malik through this route, and it is also in Kubra, 5667. Bukhari also narrated it, 5350, from the hadith of Saeed bin Jubayr through this route.