Al Miqdad bin Al Aswad reported that he said “Messenger of Allaah(ﷺ) tell me if I meet a man who is a disbeliever and he fights with me and cuts off one hand of mine with the sword and then takes refuge by a tree and says “I embraced Islam for Allah’s sake. Should I kill him, Messenger of Allaah(ﷺ) after he uttered it (the credo of Islam)? The Messenger of Allaah(ﷺ) said “Do not kill him”. I said “Messenger of Allaah(ﷺ), he cut off my hand. The Messenger of Allaah(ﷺ) said, Do not kill him. I f you kill him, he will become like you before you kill him and you will become like him before he uttered his credo which he has uttered now.

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، عَنِ اللَّيْثِ، عَنِ ابْنِ شِهَابٍ، عَنْ عَطَاءِ بْنِ يَزِيدَ اللَّيْثِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَدِيِّ بْنِ الْخِيَارِ، عَنِ الْمِقْدَادِ بْنِ الأَسْوَدِ، أَنَّهُ أَخْبَرَهُ أَنَّهُ، قَالَ يَا رَسُولَ اللَّهِ أَرَأَيْتَ إِنْ لَقِيتُ رَجُلاً مِنَ الْكُفَّارِ فَقَاتَلَنِي فَضَرَبَ إِحْدَى يَدَىَّ بِالسَّيْفِ ثُمَّ لاَذَ مِنِّي بِشَجَرَةٍ فَقَالَ أَسْلَمْتُ لِلَّهِ ‏.‏ أَفَأَقْتُلُهُ يَا رَسُولَ اللَّهِ بَعْدَ أَنْ قَالَهَا قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لاَ تَقْتُلْهُ ‏"‏ ‏.‏ فَقُلْتُ يَا رَسُولَ اللَّهِ إِنَّهُ قَطَعَ يَدِي ‏.‏ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ لاَ تَقْتُلْهُ فَإِنْ قَتَلْتَهُ فَإِنَّهُ بِمَنْزِلَتِكَ قَبْلَ أَنْ تَقْتُلَهُ وَأَنْتَ بِمَنْزِلَتِهِ قَبْلَ أَنْ يَقُولَ كَلِمَتَهُ الَّتِي قَالَ ‏"‏ ‏.‏