Musnad Ahmad 3078

It was narrated that Abu Jamrah said: I heard Ibn ‘Abbas (رضي الله عنه) say: I was a boy playing with other boys, I turned around and saw the Prophet of Allah (ﷺ) coming towards me. I said: The Prophet of Allah (ﷺ) is only coming to me, so I ran to hide behind a door. But suddenly he grabbed me by the back of the neck and gave me a slap between the shoulders and said: "Go and call Mu'awiyah for me" - as he was his scribe. So I ran to Mu'awiyah and said: Go to the Prophet of Allah (ﷺ); he wants to talk to you.