Matlib bin Abdullah (may Allah have mercy on him) says: It reached him that the Messenger of Allah (peace and blessings be upon him) on the day of the Battle of Hunayn picked up a small piece of wool lying on the ground and, holding it between two fingers, said: "O people! By Allah, nothing from the spoils of war is lawful for me, not even as much as this wool, except for the khums (one-fifth), and even the khums is distributed back among you. So fear Allah and return the needle and thread (if taken), and know that betrayal is disgrace, fire, and infamy on the Day of Resurrection."