‏البر والصلة والآداب‏ : Hadeeth No:6227 Abu Rabi' reported directly from Allaah's Prophet (may peace upon him) as saying: The one who visits the sick is in fact like one who is in the fruit garden of Paradise so long as he does not return....

‏الحج : Hadeeth No:3174 A hadith like this has been narrated by Yabya b. Abu Kathir with the same chain of transmitters....