عَنْ كَثِيرِ بْنِ سَائِبٍ قَالَ حَدَّثَنِي ابْنَا قُرَيْظَةَ أَنَّهُمْ عُرِضُوا عَلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ زَمَنَ قُرَيْظَةَ فَمَنْ كَانَ مِنْهُمْ مُحْتَلِمًا أَوْ نَبَتَتْ عَانَتُهُ قُتِلَ وَمَنْ لَا تُرِكَ
It is narrated from Kathir bin Saib, who says: The two sons of Qurayzah narrated to me that during the time of Banu Qurayzah's breach of covenant, they were presented before the Prophet Muhammad (peace and blessings be upon him). So, among them, whoever had reached puberty or had grown pubic hair was killed, and whoever was not like that was spared.