Mishkat al-Masabih 3974

‘Atiya al-Qurazi said: I was among the captives of Quraiza who were brought before the Prophet. 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.
Abu Dawud, Ibn Majah and Darimi transmitted it.