The people of Quraiza surrendered accepting the decision of Sa'd b. Mu'adh about them. Accordingly, the Messenger of Allah ﷺ sent for Sa'd who came to him riding a donkey. When he approached the mosque, the Messenger of Allah ﷺ said to the Ansar: Stand up to receive your chieftain. Then he said (to Sa'd): These people have surrendered accepting your decision. He (Sa'd) said: You will kill their fighters and capture their women and children. (Hearing this), the Prophet ﷺ said: You have adjudged by the command of God. The narrator is reported to have said: Perhaps he said: You have adjudged by the decision of a king. Ibn Muthanna (in his version of the tradition) has not mentioned the alternative words.  

نَزَلَ أَهْلُ قُرَيْظَةَ عَلَى حُكْمِ سَعْدِ بْنِ مُعَاذٍ فَأَرْسَلَ رَسُولُ اللَّهِ ﷺ إِلَى سَعْدٍ فَأَتَاهُ عَلَى حِمَارٍ فَلَمَّا دَنَا قَرِيبًا مِنَ الْمَسْجِدِ قَالَ رَسُولُ اللَّهِ ﷺ لِلأَنْصَارِ قُومُوا إِلَى سَيِّدِكُمْ أَوْ خَيْرِكُمْ ثُمَّ قَالَ إِنَّ هَؤُلاَءِ نَزَلُوا عَلَى حُكْمِكَ قَالَ تَقْتُلُ مُقَاتِلَتَهُمْ وَتَسْبِي ذُرِّيَّتَهُمْ قَالَ فَقَالَ النَّبِيُّ ﷺ قَضَيْتَ بِحُكْمِ اللَّهِ وَرُبَّمَا قَالَ قَضَيْتَ بِحُكْمِ الْمَلِكِ وَلَمْ يَذْكُرِ ابْنُ الْمُثَنَّى وَرُبَّمَا قَالَ قَضَيْتَ بِحُكْمِ الْمَلِكِ  

You have adjudged according to the command of God. And once he said: you have adjudged by the decision of a king.  

رَسُولُ اللَّهِ ﷺ لَقَدْ حَكَمْتَ فِيهِمْ بِحُكْمِ اللَّهِ وَقَالَ مَرَّةً لَقَدْ حَكَمْتَ بِحُكْمِ الْمَلِكِ  

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  

You have adjudged their case with the judgment of God. the Exalted and Glorified.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لَقَدْ حَكَمْتَ فِيهِمْ بِحُكْمِ اللَّهِ ﷻ  

O God, surely Thou knowest that nothing is dearer to me than that I should fight for Thy cause against the people who disbeliever Your Messenger ﷺ and turned him out (from his native place). If anything yet remains to be decided from the war against the Quraish, spare my life so that I may fight against them in Thy cause. O Lord, I think Thou hast ended the war between us and them. If Thou hast done so, open my wound (so that it may discharge) and cause my death thereby. So the wound begin to bleed from the front part of his neck. The people were not scared except when the blood flowed towards them, and in the mosque along with Sa'd's tent was the tent of Banu Ghifar. They said: O people of the tent, what is it that is coming to us from you? Lo! it was Sa'd's wound that was bleeding and he died thereof.  

أَنْ أُجَاهِدَ فِيكَ مِنْ قَوْمٍ كَذَّبُوا رَسُولَكَ ﷺ وَأَخْرَجُوهُ اللَّهُمَّ فَإِنْ كَانَ بَقِيَ مِنْ حَرْبِ قُرَيْشٍ شَىْءٌ فَأَبْقِنِي أُجَاهِدْهُمْ فِيكَ اللَّهُمَّ فَإِنِّي أَظُنُّ أَنَّكَ قَدْ وَضَعْتَ الْحَرْبَ بَيْنَنَا وَبَيْنَهُمْ فَإِنْ كُنْتَ وَضَعْتَ الْحَرْبَ بَيْنَنَا وَبَيْنَهُمْ فَافْجُرْهَا وَاجْعَلْ مَوْتِي فِيهَا فَانْفَجَرَتْ مِنْ لَبَّتِهِ فَلَمْ يَرُعْهُمْ وَفِي الْمَسْجِدِ مَعَهُ خَيْمَةٌ مِنْ بَنِي غِفَارٍ إِلاَّ وَالدَّمُ يَسِيلُ إِلَيْهِمْ فَقَالُوا يَا أَهْلَ الْخَيْمَةِ مَا هَذَا الَّذِي يَأْتِينَا مِنْ قِبَلِكُمْ فَإِذَا سَعْدٌ جُرْحُهُ يَغِذُّ دَمًا فَمَاتَ مِنْهَا  

(His wound) began to bleed that very night and it continued to bleed until he died. He has made the addition that it was then that (a non-believing) poet said: Hark, O Sa'd, Sa'd of Banu Mu'adh, What have the Quraiaa and Nadir done? By thy life! Sa'd b. Mu'adh>br> Was steadfast on the morn they departed. You have left your cooking-pot empty, While the cooking-pot of the people is hot and boiling. Abu Hubab the nobleman has said, O Qainuqa', do not depart. They were weighty in their country just aa rocks are weighty in Maitan.  

أَنَّهُ قَالَ فَانْفَجَرَ مِنْ لَيْلَتِهِ فَمَازَالَ يَسِيلُ حَتَّى مَاتَ وَزَادَ فِي الْحَدِيثِ قَالَ فَذَاكَ حِينَ يَقُولُ الشَّاعِرُ أَلاَ يَا سَعْدُ سَعْدَ بَنِي مُعَاذٍ فَمَا فَعَلَتْ قُرَيْظَةُ وَالنَّضِيرُ لَعَمْرُكَ إِنَّ سَعْدَ بَنِي مُعَاذٍ غَدَاةَ تَحَمَّلُوا لَهُوَ الصَّبُورُ تَرَكْتُمْ قِدْرَكُمْ لاَ شَىْءَ فِيهَا وَقِدْرُ الْقَوْمِ حَامِيَةٌ تَفُورُ وَقَدْ قَالَ الْكَرِيمُ أَبُو حُبَابٍ أَقِيمُوا قَيْنُقَاعُ وَلاَ تَسِيرُوا وَقَدْ كَانُوا بِبَلْدَتِهِمْ ثِقَالاً كَمَا ثَقُلَتْ بِمَيْطَانَ الصُّخُورُ