وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " يَضْحَكُ اللَّهُ لِرَجُلَيْنِ يَقْتُلُ أَحَدُهُمَا الْآخَرَ ، كِلَاهُمَا يَدْخُلُ الْجَنَّةَ " ، قَالُوا : كَيْفَ يَا رَسُولَ اللَّهِ ؟ قَالَ : " يَقْتُلُ هَذَا فَيَلِجُ الْجَنَّةَ ، ثُمَّ يَتُوبُ اللَّهُ عَلَى الْآخَرِ فَيَهْدِيهِ إِلَى الْإِسْلَامِ ، ثُمَّ يُجَاهِدُ فِي سَبِيلِ اللَّهِ فَيُسْتَشْهَدُ " .
And the Prophet Muhammad (peace and blessings be upon him) said: Allah Almighty smiles at two men, one of whom killed the other, but both enter Paradise. The people asked, "O Messenger of Allah, how is that?" The Prophet (peace and blessings be upon him) said: One man is martyred and enters Paradise, then Allah turns towards the killer, guides him to Islam, and he also fights in the way of Allah and is martyred.