Musannaf Ibn Abi Shaybah 18899 — Divorce by a boy

Isma'il bin Imran al-Anazi (may Allah have mercy on him) said: I was a boy who had not reached puberty when I gave a divorce, and I asked Sa'id bin al-Musayyib (may Allah have mercy on him) about it. He said: If you have learned the prayer and have fasted Ramadan, then your divorce is valid.