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 the Book of Manners (2151) from Muhammad bin Ubayd Ghubari, who said, Abu Awana narrated to us, from Abu Uthman, from Anas bin Malik, who said, and then he mentioned it.