Sahih al-Bukhari 5313
Sahih al-Bukhari · Book 68: Divorce · The separation between those who are involved in a case of Li'an.
Narrated Ibn `Umar:
حَدَّثَنِي إِبْرَاهِيمُ بْنُ الْمُنْذِرِ ، حَدَّثَنَا أَنَسُ بْنُ عِيَاضٍ ، عَنْ عُبَيْدِ اللَّهِ ، عَنْ نَافِعٍ ، أَنَّ ابْنَ عُمَرَ ـ رضى الله عنهما ـ أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم فَرَّقَ بَيْنَ رَجُلٍ وَامْرَأَةٍ قَذَفَهَا، وَأَحْلَفَهُمَا.
Allah's Messenger (ﷺ) separated (divorced) the wife from her husband who accused her for an illegal sexual intercourse, and made them take the oath of Lian .