Safwan bin Ya'la bin Umayyah narrates from his father: The Prophet Muhammad (peace be upon him) said to me: When my messenger comes to you, give him thirty camels (the narrator is in doubt, perhaps these are the words) or thirty coats of mail (the narrator is in doubt, perhaps these are the words), hand them over to him. So I asked: O Messenger of Allah (peace be upon him)! Is this temporary, which will be returned? The Prophet Muhammad (peace be upon him) said: Yes.