The Prophet ﷺ said to him, "My son."
حدثنا عمرو بن عون قال أخبرنا ح و حدثنا مسدد ومحمد بن محبوب قالوا حدثنا أبو عوانة عن أبي عثمان وسماه ابن محبوب الجعد
أن النبي ﷺ قال له يا بني
No references are available.
Muslim narrated it in the Book of Manners, in the chapter on the permissibility and desirability of saying "my son" to someone who is not one's actual son, as a form of affectionate address, hadith 2151, from the hadith of Abu Awana with this chain.