Jesus will pray funeral of mahdi sources?

I was told that Mahdi will pass away and jesus will bury him and pray funeral prayer over him. I cant locate the quotes except a link which mentions ambiguous sources. Google search isn't giving out anything except for the same webpage > sometime will pass, then Imam Mahdi will pass away. Hazrat Isa (as) will offer his funeral. http://nasirislam.com/Signoflasthour/Isa(as).html Is there a hadith for jesus burying Mahdi and jesus offering funeral prayer?