Sahih al-Bukhari 423
Sahih al-Bukhari · Book 8: Prayers (Salat) · To give the judicial verdicts in the mosque and to perform the Al-Lian between men and women (husbands and wives) there
Narrated Sahl bin Sa`d:
حَدَّثَنَا يَحْيَى ، قَالَ أَخْبَرَنَا عَبْدُ الرَّزَّاقِ ، قَالَ أَخْبَرَنَا ابْنُ جُرَيْجٍ ، قَالَ أَخْبَرَنِي ابْنُ شِهَابٍ ، عَنْ سَهْلِ بْنِ سَعْدٍ ، أَنَّ رَجُلاً، قَالَ يَا رَسُولَ اللَّهِ، أَرَأَيْتَ رَجُلاً وَجَدَ مَعَ امْرَأَتِهِ رَجُلاً أَيَقْتُلُهُ فَتَلاَعَنَا فِي الْمَسْجِدِ وَأَنَا شَاهِدٌ.
A man said, "O Allah's Messenger (ﷺ)! If a man finds another man with his wife, (committing adultery) should the husband kill him?" Later on I saw them (the man and his wife) doing Li`an in the mosque (taking oaths, one accusing, and the other denying adultery).