[Machine] The Prophet ﷺ was presented with a man who had killed someone. The guardian of the victim demanded retaliation, so he was brought forward and a piece of rope was tied around his neck and he was dragged along. When he turned away, the Messenger of Allah ﷺ said that both the killer and the victim will be in Hellfire. Then a man came to the Prophet and asked for his forgiveness. The Prophet ﷺ turned away from him. Isma'il (the narrator) mentioned this incident to Habib bin Abi Thabit, who said: Ibn Ashwa' narrated to me that the Prophet ﷺ asked him to forgive, but he refused to do so.  

أُتِيَ النَّبِيَّ ﷺ بِرَجُلٍ قَتَلَ رَجُلًا يَعْنِي فَأَقَادَ وَلِيَّ الْمَقْتُولِ مِنْهُ فَانْطَلَقَ بِهِ فِي عُنُقِهِ نِسْعَةٌ يَجُرُّهَا فَلَمَّا أَدْبَرَ قَالَ رَسُولُ اللهِ ﷺ الْقَاتِلُ وَالْمَقْتُولُ فِي النَّارِ فَأَتَى رَجُلٌ الرَّجُلَ فَقَالَ لَهُ مَقَالَةَ رَسُولِ اللهِ ﷺ فَخَلَّى عَنْهُ قَالَ إِسْمَاعِيلُ فَذَكَرْتُ ذَلِكَ لِحَبِيبِ بْنِ أَبِي ثَابِتٍ فَقَالَ حَدَّثَنِي ابْنُ أَشْوَعَ أَنَّ النَّبِيَّ ﷺ سَأَلَهُ أَنْ يَعْفُوَ فَأَبَى أَنْ يَعْفُوَ