He said

We went on an expedition with Allah's Messenger ﷺ against Hawazin, and while we were having a meal in the forenoon with Allah's Messenger ﷺ a man came on a red camel, and after he had made it kneel he began to look around. Now we were in a weak condition and in a poor way with regard to mounts, and some of us were on foot. He went out in a hurry and coming to his camel made it go and it went off quickly with him. I hastened out and catching the camel’s nose-rein I made it kneel, then drew my sword and struck the man on his head. I then brought the camel leading it with his saddle and weapons on it, and when Allah's Messenger ﷺ and the people met me he asked who had killed the man. On their replying that it was the son of al-Akwa‘, he said, “He gets all his spoil.” (Bukhari and Muslim.)