Musnad Abu Ya'la al-Mawsili 128:1

Abu Bakr ibn Abi Shaybah narrated to us, Abu Mu'awiyah narrated to us, from al-A'mash, from Abu Sufyan, from Anas, who said: Gabriel came to the Prophet, may Allah bless him and grant him peace, one day while he was sitting and sad, for some of the people of Makkah had struck him. He said, "What is the matter with you?" He replied, "These people have done such and such to me." He said, "Would you like me to show you a sign?" He said, "Yes." He said, "Look at that tree behind the valley." He said, "Call that tree." He said, "So he called it, and it came walking until it stood before him." He said to it, "Go back." He said, "So it returned to its place."