Sahih Muslim Book 19, Hadith Number 4341.

Chapter : Regarding the right of the fighter to the belongings of the one killed by him in the fight.

It has been narrated on the authority of ‘Abd al-Rahman b. Auf who said: While I was standing in the battle array on the Day of Badr, I looked towards my right and my left, and found myself between two boys from the Ansar quite young in age. I wished I were between stronger persons. One of them made a sign to me and said: Uncle, do you recognise Abu Jahl? I said: Yes. What do you want to do with him, O my nephew? He said: I have been told that he abuses the Messenger of Allah (may peace be upon him). By Allah, in Whose Hand is my life, if I see him (I will grapple with him) and will not leave him until one of us who is destined to die earlier is killed. The narrator said: I wondered at this. Then the other made a sign to me and said similar words. Soon after I saw Abu Jahl. He was moving about among men. I said to the two boys: Don’t you see? He is the man you were inquiring about. (As soon as they heard this), they dashed towards him, struck him with their swords until he was killed. Then they returned to the Messenger of Allah (may peace be upon him) and informed him (to this effect). He asked: Which of you has killed him? Each one of them said: I have killed him. He said: Have you wiped your swords? They said: No. He examined their swords and said: Both of you have killed him. He then decided that the belongings of Abu Jahl he handed over to Mu’adh b. Amr b. al-Jamuh. And the two boys were Mu’adh b. Amr b. Jawth and Mu’adh b. Afra.