‏فضائل الصحابة‏ : Hadeeth No:5963 Abdullah b. Ja'a'far reported that when Allaah's Messenger (sallAllaahu alayhi wa sallam) came back from a journey he met us. Once he met me, Hasan or Husain, and he mounted one of us before him and the other one behind him until we entered Medina....

‏الإمارة : Hadeeth No:4488 The same tradition has been narrated through a different chain of transmitters....