Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that on the day of the Battle of Uhud, I was fourteen years old. I presented myself before the Messenger of Allah (peace and blessings be upon him) for battle, but he did not permit me. Then on the day of the Battle of Khandaq, I was fifteen years old. I presented myself before him, and he permitted me. Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says: During the caliphate of Sayyiduna Umar bin al-Khattab (may Allah be pleased with him), I came to him and narrated this hadith before him. He said: This is the boundary between a child and a young man. Accordingly, he wrote to his governors to grant a stipend to a fifteen-year-old boy, and whoever is younger than this, let him remain with his family.