عَن عَطِيَّة القَرظِي
قَالَ: كنتُ فِي سَبي قُرَيْظَةَ عُرِضْنَا عَلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَكَانُوا يَنْظُرُونَ فَمَنْ أَنْبَتَ الشَّعَرَ قُتِلَ وَمَنْ لَمْ يُنْبِتْ لَمْ يُقْتَلْ فَكَشَفُوا عَانَتِي فَوَجَدُوهَا لَمْ تُنْبِتْ فَجَعَلُونِي فِي السَّبْيِ
I was among the captives of Quraiza who were brought before the Prophet (sallallahu alayhi wa sallam). The Companions examined us, and those who had begun to grow hair were killed, but those who had not were not killed. They uncovered my private parts and when they found that the hair had not begun to grow they put me among the captives.
Mishkat al-Masabih 3812, Book 20, Jihad, Hadith 186. 1 min read