Al Miqdad bin Al Aswad reported that he said “Apostle 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, Apostle of Allaah ﷺ after he uttered it (the credo of Islam)? The Apostle of Allaah ﷺ said “Do not kill him”. I said “Apostle of Allaah ﷺ, he cut off my hand. The Apostle 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. (Using translation from Abū Dāʾūd 2644)
أَنَّهُ أَخْبَرَهُ أَنَّهُ قَالَ يَا رَسُولَ اللهِ أَرَأَيْتَ إِنْ لَقِيتُ رَجُلًا مِنَ الْكُفَّارِ فَقَاتَلَنِي وَضَرَبَ إِحْدَى يَدِيَّ بِالسَّيْفِ فَقَطَعَهَا ثُمَّ لَاذَ مِنِّي بِشَجَرَةٍ فَقَالَ أَسْلَمْتُ لِلَّهِ أَفَأَقْتُلُهُ يَا رَسُولَ اللهِ بَعْدَ أَنْ قَالَهَا؟ فَقَالَ رَسُولُ اللهِ ﷺ لَا تَقْتُلْهُ قَالَ فَقُلْتُ يَا رَسُولَ اللهِ فَإِنَّهُ قَدْ قَطَعَ يَدِي ثُمَّ قَالَ ذَلِكَ بَعْدَ أَنْ قَطَعَهَا أَفَأَقْتُلُهُ؟ فَقَالَ رَسُولُ اللهِ ﷺ لَا تَقْتُلْهُ فَإِنْ قَتَلْتَهُ؛ فَإِنَّهُ بِمَنْزِلَتِكَ قَبْلَ أَنْ تَقْتُلَهُ وَإِنَّكَ بِمَنْزِلَتِهِ قَبْلَ أَنْ يَقُولَ كَلِمَتَهُ الَّتِي قَالَ