Saeed bin Jubayr reported,

Saeed bin Jubayr said, I was asked about the case of Mutalaineen concerning Musab's wife, whether they should be separated. I did not know what to answer, so I went to Ibn Umar's house in Mecca.I said to the servant boy, "Ask permission for me to enter."He replied, "He is taking his midday rest."Ibn Umar heard my voice and asked, "Is that Ibn Jubayr?"I said, "Yes."He said, "Come in. By Allah, nothing but a pressing matter could have brought you at this hour."So I entered, and there he was, lying on a saddle blanket with a pillow stuffed with palm fibers under his head.I said, "Abu Abdul-Rahman, the two who perform the lian, are they to be separated?"He said, "Glory be to Allah! Yes. The first person who ever asked about this was so-and-so, son of so-and-so. He said, 'Messenger of Allah, tell me, if one of us were to find his wife committing adultery, what should he do? If he speaks, he speaks of a grave matter, and if he stays silent, he stays silent over the same.' The Prophet ﷺ remained silent and did not answer him.Some time later the man came back and said, 'The very thing I asked you about has now befallen me.' So Allah revealed these verses in Surah an-Nur, 'And those who accuse their wives' [Nur 24:6]. The Prophet recited them to him, admonished him, reminded him, and told him that the punishment of this world is lighter than the punishment of the Hereafter.The man said, 'No, by the One who sent you with the truth, I have not lied about her.'Then the Prophet called the woman, admonished her, reminded her, and told her that the punishment of this world is lighter than the punishment of the Hereafter.She said, 'No, by the One who sent you with the truth, he is a liar.'So he began with the man, who bore witness four times by Allah that he was telling the truth, and the fifth time that the curse of Allah be upon him if he was lying. Then he turned to the woman, who bore witness four times by Allah that he was lying, and the fifth time that the wrath of Allah be upon her if he was truthful. Then he separated them."

عن سعيد بن جبير قال

سئلت عن المتلاعنين في امرأة مصعب، أيفرق بينهما؟ قال: فما دريت ما أقول، فمضيت إلى منزل ابن عمر بمكة. فقلت للغلام: استأذن لي. قال: إنه قائل. فسمع صوتي. قال ابن جبير؟ قلت: نعم. قال: ادخل فوالله! ما جاء بك هذه الساعة إلا حاجة. فدخلت، فإذا هو مفترش برذعة، متوسد وسادة حشوها ليف. قلت: أبا عبد الرحمن! المتلاعنان، أيفرق بينهما؟ قال: سبحان الله! نعم. إن أول من إن أول من سأل عن ذلك فلان بن فلان. قال: يا رسول الله! أرأيت أن لو وجد أحدنا امرأته على فاحشة، كيف يصنع؟ إن تكلم تكلم بأمر عظيم، وإن سكت سكت على مثل ذلك. قال: فسكت النبي ﷺ فلم يجبه. فلما كان بعد ذلك أتاه فقال: إن الذي سألتك عنه قد ابتليت به. فأنزل الله عز وجل هؤلاء الآيات في سورة النور. {والذين يرمون أزواجهم} [النور: ٦] فتلاهن عليه، ووعظه وذكره. وأخبره أن عذاب الدنيا أهون من عذاب الآخرة. قال: لا، والذي بعثك بالحق! ما كذبت عليها. ثم دعاها فوعظها وذكرها، وأخبرها أن عذاب الدنيا أهون من عذاب الآخرة. قالت: لا، 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. ثم فرق بينهما.