حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ الْقَعْنَبِيُّ، عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، أَنَّ سَهْلَ بْنَ سَعْدٍ السَّاعِدِيَّ، أَخْبَرَهُ أَنَّ عُوَيْمِرَ بْنَ أَشْقَرَ الْعَجْلاَنِيَّ جَاءَ إِلَى عَاصِمِ بْنِ عَدِيٍّ فَقَالَ لَهُ يَا عَاصِمُ أَرَأَيْتَ رَجُلاً وَجَدَ مَعَ امْرَأَتِهِ رَجُلاً أَيَقْتُلُهُ فَتَقْتُلُونَهُ أَمْ كَيْفَ يَفْعَلُ سَلْ لِي يَا عَاصِمُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ ذَلِكَ ‏.‏ فَسَأَلَ عَاصِمٌ رَسُولَ اللَّهِ صلى الله عليه وسلم فَكَرِهَ رَسُولُ اللَّهِ صلى الله عليه وسلم الْمَسَائِلَ وَعَابَهَا حَتَّى كَبُرَ عَلَى عَاصِمٍ مَا سَمِعَ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم فَلَمَّا رَجَعَ عَاصِمٌ إِلَى أَهْلِهِ جَاءَهُ عُوَيْمِرٌ فَقَالَ لَهُ يَا عَاصِمُ مَاذَا قَالَ لَكَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَقَالَ عَاصِمٌ لَمْ تَأْتِنِي بِخَيْرٍ قَدْ كَرِهَ رَسُولُ اللَّهِ صلى الله عليه وسلم الْمَسْأَلَةَ الَّتِي سَأَلْتُهُ عَنْهَا ‏.‏ فَقَالَ عُوَيْمِرٌ وَاللَّهِ لاَ أَنْتَهِي حَتَّى أَسْأَلَهُ عَنْهَا ‏.‏ فَأَقْبَلَ عُوَيْمِرٌ حَتَّى أَتَى رَسُولَ اللَّهِ صلى الله عليه وسلم وَهُوَ وَسَطَ النَّاسِ فَقَالَ يَا رَسُولَ اللَّهِ أَرَأَيْتَ رَجُلاً وَجَدَ مَعَ امْرَأَتِهِ رَجُلاً أَيَقْتُلُهُ فَتَقْتُلُونَهُ أَمْ كَيْفَ يَفْعَلُ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ قَدْأُنْزِلَ فِيكَ وَفِي صَاحِبَتِكَ قُرْآنٌ فَاذْهَبْ فَأْتِ بِهَا ‏"‏ ‏.‏ قَالَ سَهْلٌ فَتَلاَعَنَا وَأَنَا مَعَ النَّاسِ عِنْدَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَلَمَّا فَرَغَا قَالَ عُوَيْمِرٌ كَذَبْتُ عَلَيْهَا يَا رَسُولَ اللَّهِ إِنْ أَمْسَكْتُهَا ‏.‏ فَطَلَّقَهَا عُوَيْمِرٌ ثَلاَثًا قَبْلَ أَنْ يَأْمُرَهُ النَّبِيُّ صلى الله عليه وسلم ‏.‏ قَالَ ابْنُ شِهَابٍ فَكَانَتْ تِلْكَ سُنَّةَ الْمُتَلاَعِنَيْنِ‏.‏

Sahl ibn Sa'd al-Sa'idi informed him that 'Uwaimir ibn Ashqar al-'Ajlani came to 'Asim ibn 'Adiy and said to him: O 'Asim, tell me: if a man finds a man with his wife, should he kill him and then you kill him, or how should he act? Ask the Messenger of Allah, peace and blessings be upon him, about that for me, O 'Asim. So 'Asim asked the Messenger of Allah, peace and blessings be upon him, about that. The Messenger of Allah, peace and blessings be upon him, disliked questioning and considered it reprehensible, until it weighed heavily upon 'Asim what he heard from the Messenger of Allah, peace and blessings be upon him. When 'Asim returned to his family, 'Uwaimir came to him and said: O 'Asim, what did the Messenger of Allah, peace and blessings be upon him, say to you? 'Asim said to him: You did not bring me any good; the Messenger of Allah, peace and blessings be upon him, disliked the question that I asked him about. 'Uwaimir said: By Allah, I will not stop until I ask him about it. So 'Uwaimir set out until he came to the Messenger of Allah, peace and blessings be upon him, while he was among the people in the middle of them, and said: O Messenger of Allah, if a man finds a man with his wife, should he kill him, then you kill him, or how should he act? The Messenger of Allah, peace and blessings be upon him, said: "A revelation has indeed been sent down concerning you and your companion, so go and bring her." Sahl said: They performed the mutual cursing (li'an) while I was with the people with the Messenger of Allah, peace and blessings be upon him. When they finished, 'Uwaimir said: I would have lied against her, O Messenger of Allah, if I were to keep her. So 'Uwaimir divorced her three times before the Prophet of Allah, peace and blessings be upon him, commanded him to do so. Ibn Shihab said: And that became the practice for those who engage in mutual cursing.