The Prophet ﷺ was carrying Hasan and said, "I love him, so love him."
حدثنا بهز حدثنا شعبة عن عدي بن ثابت
أن النبي ﷺ كان حاملا الحسن فقال إني أحبه فأحبه
Its chain of transmission is sahih, mentioned previously at 10835.