Too Young for Uhud

'Abdullah accepted Islam as a child in Makkah alongside his father and migrated to Madinah while still young. When the army prepared for Uhud, he was fourteen and presented himself to the Prophet ﷺ, who did not accept him for fighting.

Two years later, before the Battle of the Trench, he presented himself again at fifteen, and this time the Prophet ﷺ accepted him. Years afterwards the caliph 'Umar ibn 'Abd al-'Aziz took this as the line between a child and a man when setting stipends (Sahih al-Bukhari 2664; Sahih Muslim 1868).

The young man took his rejection not as an insult but as a reason to wait and prepare. He missed no occasion afterwards.