Anas told that Gabriel came to the Prophet when he was sitting grieved, smeared with blood as a result of what the people of Mecca had done[*], and said, "Messenger of God, would you like me to show you a sign?" When he agreed, Gabriel looked at a tree behind him and said, "Call it." He did so, and it came and stood in front of him. He then said, "Order it to go back," and when he had done so and it had gone back God's messenger said, "That is enough for me, that is enough for me." *Mirqat, v, 474, relates this to the injuries the Prophet suffered at the battle of Uhud Darimi transmitted it.