It is narrated from Hazrat Atiyyah Qarazi (may Allah be pleased with him) that on the occasion of the Battle of Banu Qurayza, we were presented before the Holy Prophet (peace and blessings be upon him), and it was decided that whoever had grown pubic hair would be killed, and whoever had not grown pubic hair would be let go. I was among those who had not grown hair, so I was let go.
Hadith Referenceمسند احمد / تتمہ مُسْنَدِ الْكُوفِيِّينَ / 19421
Hazrat Atiyyah (may Allah be pleased with him) says that on the day Hazrat Sa’d (may Allah be pleased with him) gave the verdict regarding Banu Qurayzah, I was a small boy; they did not find pubic hair grown on me, and for this reason, I am present among you today.
Hadith Referenceمسند احمد / تتمہ مُسْنَدِ الْكُوفِيِّينَ / 19422