ذِكْرُ الْإِخْبَارِ عَنِ السَّبَبِ الَّذِي مِنْ أَجَلِهِ أَنْزَلَ اللَّهُ جَلَّ وَعَلَا {وَإِنْ حَكَمْتَ فَاحْكُمْ بَيْنَهُمْ بِالْقِسْطِ}
"There were (the two tribes of) Quraizah and An-Nadir, and An-Nadir was nobler than Quraiaah. If a man of Quraizah Killed a man of An-Nadir, he would be killed in return, but if a man of An-Nadir killed a man of Quraizah, he would pay a Diyah of one hundred Wasqs of dates. When An-Nadir killed a man of Quraizah, and they said: 'Hand him over to us and we will kill him.' They said: 'Between us and you (as judge) is the Prophet.' So they came to him, then the following was revealed: "And if you judge, judge with justice between them."[3] Al-Qisl (justice) means a soul for a soul. Then the following was revealed: "Do they then seek the judgment of (the days of) Ignorance?"[4] (Using translation from Nasāʾī 4732)
كَانَتْ قُرَيْظَةُ وَالنَّضِيرُ وَكَانَتِ النَّضِيرُ أَشْرَفَ مِنْ قُرَيْظَةَ قَالَ وَكَانَ إِذَا قَتَلَ رَجُلٌ مِنْ قُرَيْظَةَ رَجُلًا مِنَ النَّضِيرِ قُتِلَ بِهِ وَإِذَا قَتَلَ رَجُلٌ مِنَ النَّضِيرِ رَجُلًا مِنْ قُرَيْظَةَ وَدَى مِائَةَ وَسْقٍ مِنْ تَمْرٍ فَلَمَّا بُعِثَ النَّبِيُّ ﷺ قَتَلَ رَجُلٌ مِنَ النَّضِيرِ رَجُلًا مِنْ قُرَيْظَةَ فَقَالُوا ادْفَعُوهُ إِلَيْنَا نَقْتُلُهُ فَقَالُوا بَيْنَنَا وَبَيْنَكُمُ النَّبِيُّ ﷺ فَأَتَوْهُ فَنَزَلَتْ {وَإِنْ حَكَمْتَ فَاحْكُمْ بَيْنَهُمْ بِالْقِسْطِ} وَالْقِسْطُ النَّفْسُ بِالنَّفْسِ ثُمَّ نَزَلَتْ {أَفَحُكْمَ الْجَاهِلِيَّةِ يَبْغُونَ}