It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that a man from Banu Amir came to the Messenger of Allah (peace and blessings be upon him). The Prophet (peace be upon him) said: "Shall I show you a sign?" He said, "Show me." The Prophet (peace be upon him) said: "Go and call that date-palm tree." So the man went and called the tree, and the tree came hopping towards him. The man said, "Tell it to go back." The Prophet (peace be upon him) said: "Go back." So the tree returned to its place. Then the man from Banu Amir said, "O Banu Amir, I have never seen a greater magician than him till today."