Sayyiduna Abdullah bin Ja'far (may Allah be pleased with them both) relates: "The Prophet (peace and blessings be upon him) passed by me while I was with some boys of Banu Abd al-Muttalib, and he (peace and blessings be upon him) mounted me and another boy on the riding animal he was on, so there were three of us on it."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 13802