The Messenger of Allah ﷺ said to me, "My son."
قال لي رسول الله ﷺ: يا بني.
No references are available.
Muslim narrated it in "Etiquette" (2151) from Muhammad bin Ubayd Ghubari, who said, Abu Awana narrated to us, from Abu Uthman, from Anas, and he related it.