Sunan an-Nasa'i, Volume 4, Book 27, Hadith 3460 (DarusSalam) ⓘ

It was narrated that 'Atiyyah Al-Qurazi said: "On the day that Sa'd passed judgment on Banu Quraizah I was a young boy and they were not sure about me, but they did not find any pubic hair, so they let me live, and here I am among you."

أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَبْدِ الْمَلِكِ بْنِ عُمَيْرٍ، عَنْ عَطِيَّةَ الْقُرَظِيِّ، قَالَ كُنْتُ يَوْمَ حُكْمِ سَعْدٍ فِي بَنِي قُرَيْظَةَ غُلاَمًا فَشَكُّوا فِيَّ فَلَمْ يَجِدُونِي أَنْبَتُّ فَاسْتُبْقِيتُ فَهَا أَنَا ذَا بَيْنَ أَظْهُرِكُمْ ‏.‏