عَبْدُ الرَّحْمَنِ بْنُ كَعْبِ بْنِ مَالِكٍ، عَنْ سَلَمَةَ بْنِ الْأَكْوَعِ
[Machine] On the day of the Battle of Khaybar, my brother fought fiercely with the Messenger of Allah ﷺ . He turned back towards him with his sword and killed him. The companions of the Messenger of Allah ﷺ had doubts and questioned this matter. A man died by his weapon, so they doubted some of his affair. Salamah said, "So the Messenger of Allah ﷺ locked himself in Khaybar." I said, "O Messenger of Allah, permit me to retaliate against him?" So the Messenger of Allah ﷺ gave him permission. Then Umar ibn Al-Khattab said, "I know what you are going to say." So I said...
لَمَّا كَانَ يَوْمُ خَيْبَرَ قَاتَلَ أَخِي مَعَ رَسُولِ اللهِ ﷺ قِتَالًا شَدِيدًا فَارْتَدَّ إِلَيْهِ سَيْفُهُ فَقَتَلَهُ فَقَالَ أَصْحَابُ رَسُولِ اللهِ ﷺ فِي ذَلِكَ وَشَكُّوا فِي أَمْرِهِ رَجُلٌ مَاتَ بِسِلَاحِهِ فَشَكُّوا فِي بَعْضِ أَمْرِهِ فَقَالَ سَلَمَةُ فَقَفَلَ رَسُولُ اللهِ ﷺ مِنْ خَيْبَرَ فَقُلْتُ يَا رَسُولَ اللهِ ائْذَنْ لِي أَنْ أَرْجُزَ بِكَ؟ فَأَذِنَ لَهُ رَسُولُ اللهِ ﷺ فَقَالَ عُمَرُ بْنُ الْخَطَّابِ ؓ اعْلَمْ مَا تَقُولُ فَقُلْتُ