Saʿd was wounded on the day of Khandaq (i.e. Trench) when a man from Quraish, called Hibban bin Al-ʿAraqa hit him (with an arrow). The man was Hibban bin Qais from (the tribe of) Bani Mais bin 'Amir bin Lu'ai who shot an arrow at Saʿd's medial arm vein (or main artery of the arm). The Prophet ﷺ pitched a tent (for Saʿd) in the Mosque so that he might be near to the Prophet ﷺ to visit. When the Prophet returned from the (battle) of Al-Khandaq (i.e. Trench) and laid down his arms and took a bath Gabriel came to him while he (i.e. Gabriel) was shaking the dust off his head, and said, "You have laid down the arms?" By Allah, I have not laid them down. Go out to them (to attack them)." The Prophet ﷺ said, "Where?" Gabriel pointed towards Bani Quraiza. So Messenger of Allah ﷺ went to them (i.e. Banu Quraiza) (i.e. besieged them). They then surrendered to the Prophet's judgment but he directed them to Saʿd to give his verdict concerning them. Saʿd said, "I give my judgment that their warriors should be killed, their women and children should be taken as captives, and their properties distributed." Narrated Hisham: My father informed me that ʿAisha said, "Saʿd said, "O Allah! You know that there is nothing more beloved to me than to fight in Your Cause against those who disbelieved Your Apostle and turned him out (of Mecca). O Allah! I think you have put to an end the fight between us and them (i.e. Quraish infidels). And if there still remains any fight with the Quraish (infidels), then keep me alive till I fight against them for Your Sake. But if you have brought the war to an end, then let this wound burst and cause my death thereby.' So blood gushed from the wound. There was a tent in the Mosque belonging to Banu Ghifar who were surprised by the blood flowing towards them . They said, 'O people of the tent! What is this thing which is coming to us from your side?' Behold! Blood was flowing profusely out of Saʿd's wound. Saʿd then died because of that."  

أُصِيبَ سَعْدٌ يَوْمَ الْخَنْدَقِ رَمَاهُ رَجُلٌ مِنْ قُرَيْشٍ يُقَالُ لَهُ حِبَّانُ ابْنُ الْعَرِقَةِ رَمَاهُ فِي الأَكْحَلِ فَضَرَبَ النَّبِيُّ ﷺ خَيْمَةً فِي الْمَسْجِدِ لِيَعُودَهُ مِنْ قَرِيبٍ فَلَمَّا رَجَعَ رَسُولُ اللَّهِ ﷺ مِنَ الْخَنْدَقِ وَضَعَ السِّلاَحَ وَاغْتَسَلَ فَأَتَاهُ جِبْرِيلُ عَلَيْهِ السَّلاَمُ وَهْوَ يَنْفُضُ رَأْسَهُ مِنَ الْغُبَارِ فَقَالَ قَدْ وَضَعْتَ السِّلاَحَ وَاللَّهِ مَا وَضَعْتُهُ اخْرُجْ إِلَيْهِمْ قَالَ النَّبِيُّ ﷺ فَأَيْنَ فَأَشَارَ إِلَى بَنِي قُرَيْظَةَ فَأَتَاهُمْ رَسُولُ اللَّهِ ﷺ فَنَزَلُوا عَلَى حُكْمِهِ فَرَدَّ الْحُكْمَ إِلَى سَعْدٍ قَالَ فَإِنِّي أَحْكُمُ فِيهِمْ أَنْ تُقْتَلَ الْمُقَاتِلَةُ وَأَنْ تُسْبَى النِّسَاءُ وَالذُّرِّيَّةُ وَأَنْ تُقْسَمَ أَمْوَالُهُمْ۔

قَالَ هِشَامٌ فَأَخْبَرَنِي أَبِي عَنْ عَائِشَةَ أَنَّ سَعْدًا قَالَ اللَّهُمَّ إِنَّكَ تَعْلَمُ أَنَّهُ لَيْسَ أَحَدٌ أَحَبَّ إِلَىَّ أَنْ أُجَاهِدَهُمْ فِيكَ مِنْ قَوْمٍ كَذَّبُوا رَسُولَكَ ﷺ وَأَخْرَجُوهُ اللَّهُمَّ فَإِنِّي أَظُنُّ أَنَّكَ قَدْ وَضَعْتَ الْحَرْبَ بَيْنَنَا وَبَيْنَهُمْ فَإِنْ كَانَ بَقِيَ مِنْ حَرْبِ قُرَيْشٍ شَىْءٌ فَأَبْقِنِي لَهُ حَتَّى أُجَاهِدَهُمْ فِيكَ وَإِنْ كُنْتَ وَضَعْتَ الْحَرْبَ فَافْجُرْهَا وَاجْعَلْ مَوْتَتِي فِيهَا فَانْفَجَرَتْ مِنْ لَبَّتِهِ فَلَمْ يَرُعْهُمْ وَفِي الْمَسْجِدِ خَيْمَةٌ مِنْ بَنِي غِفَارٍ إِلاَّ الدَّمُ يَسِيلُ إِلَيْهِمْ فَقَالُوا يَا أَهْلَ الْخَيْمَةِ مَا هَذَا الَّذِي يَأْتِينَا مِنْ قِبَلِكُمْ فَإِذَا سَعْدٌ يَغْذُو جُرْحُهُ دَمًا فَمَاتَ مِنْهَا ؓ  

Sa'd was wounded on the day of the Battle of the Ditch. A man from the Quraish called Ibn al-Ariqah shot at him an arrow which pierced the artery in the middle of his forearm. The Messenger of Allah ﷺ pitched a tent for him in the mosque and would inquire after him being in close proximity. When he returned from the Ditch and laid down his arms and took a bath, the angel Gabriel appeared to him and he was removing dust from his hair (as if he had just returned from the battle). The latter said: You have laid down arms. By God, we haven't (yet) laid them down. So march against them. The Messenger of Allah ﷺ asked: Where? He pointed to Banu Quraiza. So the Messenger of Allah (may peace he upon him) fought against them. They surrendered at the command of the Messenger of Allah ﷺ, but he referred the decision about them to Sa'd who said: I decide about them that those of them who can fight be killed, their women and children taken prisoners and their properties distributed (among the Muslims).  

أُصِيبَ سَعْدٌ يَوْمَ الْخَنْدَقِ رَمَاهُ رَجُلٌ مِنْ قُرَيْشٍ يُقَالُ لَهُ ابْنُ الْعَرِقَةِ رَمَاهُ فِي الأَكْحَلِ فَضَرَبَ عَلَيْهِ رَسُولُ اللَّهِ ﷺ خَيْمَةً فِي الْمَسْجِدِ يَعُودُهُ مِنْ قَرِيبٍ فَلَمَّا رَجَعَ رَسُولُ اللَّهِ ﷺ مِنَ الْخَنْدَقِ وَضَعَ السِّلاَحَ فَاغْتَسَلَ فَأَتَاهُ جِبْرِيلُ وَهُوَ يَنْفُضُ رَأْسَهُ مِنَ الْغُبَارِ فَقَالَ وَضَعْتَ السِّلاَحَ وَاللَّهِ مَا وَضَعْنَاهُ اخْرُجْ إِلَيْهِمْ فَقَالَ رَسُولُ اللَّهِ ﷺ فَأَيْنَ فَأَشَارَ إِلَى بَنِي قُرَيْظَةَ فَقَاتَلَهُمْ رَسُولُ اللَّهِ ﷺ فَنَزَلُوا عَلَى حُكْمِ رَسُولِ اللَّهِ ﷺ فَرَدَّ رَسُولُ اللَّهِ ﷺ الْحُكْمَ فِيهِمْ إِلَى سَعْدٍ قَالَ فَإِنِّي أَحْكُمُ فِيهِمْ أَنْ تُقْتَلَ الْمُقَاتِلَةُ وَأَنْ تُسْبَى الذُّرِّيَّةُ وَالنِّسَاءُ وَتُقْسَمَ أَمْوَالُهُمْ  

[Machine] When the Messenger of Allah ﷺ returned from the Battle of the Trench, put down his weapon, and performed ablution, Gabriel ﷺ came to him. Dust was on his head and he said, "You have put down your weapons, but by Allah, you have not put them down. Go out to them." The Messenger of Allah ﷺ asked, "Where are they?" Gabriel replied, "They are here." So the Messenger of Allah ﷺ went out to them. Hisham said, "My father informed me that they surrendered to the judgment of the Messenger of Allah ﷺ. The judgment was returned to Sa'd, and he said, 'I judge that the fighting men should be killed, the women and children should be taken as captives, and their wealth should be divided.' Hisham said, 'My father said to me, 'I was informed that the Messenger of Allah ﷺ said, 'Indeed, you have judged them with the judgment of Allah.'''"  

لَمَّا رَجَعَ رَسُولُ اللهِ ﷺ مِنَ الْخَنْدَقِ وَوَضَعَ السِّلَاحَ وَاغْتَسَلَ فَأَتَاهُ جِبْرِيلُ عَلَيْهِ السَّلَامُ وَعَلَى رَأْسِهِالْغُبَارُ قَالَ قَدْ وَضَعْتَ السِّلَاحَ فَوَاللهِ مَا وَضَعْتُهَا اخْرُجْ إِلَيْهِمْ قَالَ رَسُولُ اللهِ ﷺ فَأَيْنَ؟ قَالَ هَاهُنَا فَأَشَارَ إِلَى بَنِي قُرَيْظَةَ فَخَرَجَ رَسُولُ اللهِ ﷺ إِلَيْهِمْ قَالَ هِشَامٌ فَأَخْبَرَنِي أَبِي أَنَّهُمْ نَزَلُوا عَلَى حُكْمِ رَسُولِ اللهِ ﷺ فَرَدَّ الْحُكْمَ فِيهِمْ إِلَى سَعْدٍ قَالَ فَإِنِّي أَحْكُمُ أَنْ تُقَتَّلَ الْمُقَاتِلَةُ وَتُسْبَى النِّسَاءُ وَالذُّرِّيَّةُ وَتُقَسَّمَ أَمْوَالُهُمْ قَالَ هِشَامٌ قَالَ أَبِي فَأُخْبِرْتُ أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَقَدْ حَكَمْتَ فِيهِمْ بِحُكْمِ اللهِ ﷻ