Narrated Ibn 'Abbas:
that the Messenger of Allah (ﷺ) was carrying Al-Hasan bin 'Ali upon his shoulder, so a man said: "What an excellent mount you are riding, O child." So the Prophet (ﷺ) said: "And what an excellent rider he is." (IT)
English reference (IT): Vol. 1, Book 46, Hadith 3784 (IT)
Arabic reference (IT): Book 49, Hadith 4153 (IT)