Jabir Herbert Muhammad — son of Nation of Islam founder Elijah Muhammad and former manager of boxing great Muhammad Ali — died Monday afternoon at the University of Illinois at Chicago Medical Center.Mr. Muhammad, 79, had undergone open-heart surgery last week, said Joseph Morris, a Muhammad family attorney. Mr. Muhammad had been in the news last year because of a lawsuit he filed against convicted political fund-raiser Tony Rezko to stay in his South Side mansion, a home built by the late Elijah Muhammad.In an interview with the Chicago Sun-Times last year, Mr. Muhammad said Rezko had “embezzled” him out...