He said:
When I was walking with God's messenger who was wearing a Najrani cloak with a coarse fringe, a nomadic Arab caught up on him and gave his cloak a violent tug, pulling God's Prophet back against his chest, and I saw that the side of God's messenger's shoulder was marked by the fringe of the cloak because of the violence of the man's tug. He said, "Command, that I be given some of God's property which you have, Muhammad," and God's messenger turned round to him and laughed, then ordered that he be given something.
(Bukhari and Muslim.)