Sahih Muslim, 4837

Rapporté par Ibn 'Umar رضي الله عنه : Le Messager d’Allah ﷺ m’a examiné sur le champ de bataille le jour de Uhud alors que j’avais quatorze ans, et il ne m’a pas permis de participer au combat. Il m’a examiné le jour de Khandaq, j’avais quinze ans, et il m’a autorisé à combattre. Nafi' a dit : Je suis allé voir 'Umar b. 'Abd al-'Aziz, qui était alors calife, et je lui ai rapporté cette tradition. Il a dit : « C’est donc la limite entre un mineur et un majeur. » Il a alors écrit à ses gouverneurs de verser une allocation à ceux qui avaient quinze ans, mais de traiter différemment les enfants plus jeunes

It has been narrated on the authority of Ibn 'Umar who said:The Messenger of Allah (ﷺ) inspected me on the battlefield on the Day of Uhud, and I was fourteen years old. He did not allow me (to take part in the fight). He inspected me on the Day of Khandaq-and I was fifteen yearsold, and he permitted me (to fight), Nafi' said: I came to 'Umar b. 'Abd al-'Aziz who was then Caliph, and narrated this tradition to him. He said: Surely, this is the demarcation between a minor and a major. So he wrote to his governors that they should pay subsistence allowance to one who was fifteen years old, but should treat those of lesser age among children