Arabic (Original)
حَدَّثَنَا يَزِيدُ قَالَ أَخْبَرَنَا سَعِيدٌ عَن قَتَادَةَ عَن الْحَسَنِ عَن أَبِي مُوسَى عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ إِذَا الْمُسْلِمَانِ تَوَاجَهَا بِسَيْفَيْهِمَا فَقَتَلَ أَحَدُهُمَا صَاحِبَهُ فَهُمَا فِي النَّارِ قِيلَ يَا رَسُولَ اللَّهِ هَذَا الْقَاتِلُ مَا بَالُ الْمَقْتُولِ قَالَ إِنَّهُ أَرَادَ قَتْلَ صَاحِبِهِ.
English Translation
Yazid told us: Sa'id informed us, from Qatadah, from al-Hasan, from Abu Musa, from the Prophet, peace and blessings be upon him, who said: "When two Muslims face each other with their swords and one of them kills his companion, both of them are in the Fire." It was said, "O Messenger of Allah, this is the killer, but what about the one killed?" He said, "He intended to kill his companion."