Musnad Ahmad 32:172

Abu Mu'awiyah narrated to us, from al-A'mash, from Abu Sufyan, from Anas ibn Malik, who said: Gabriel came to the Prophet, may Allah bless him and grant him peace, one day while he was sitting in sadness, having been stained with blood, for some of the people of Makkah had struck him. He said: So he said to him, "What is the matter with you?" He said: So he said to him, "These people have done to me such and such." He said: So Gabriel, peace be upon him, said to him, "Would you like me to show you a sign?" He said, "Yes." He said: So he looked at a tree behind the valley and said, "Call that tree." So he called it, and it came walking until it stood before him. He said, "Command it to return." So he commanded it, and it returned to its place. Then the Messenger of Allah, may Allah bless him and grant him peace, said, "It is sufficient for me."