Two fighters who you wish would have never / or will never retire? #FightForever

Which two fighters in the history of boxing would you wish never retired, or if they're still active, will never retire in the future. Everyone need to retire someday but if you could pick two fighters who would always remain active, freezing time in their prime, who would it be? It's a tough one for me.. at first I was going to say Hopkins, but then on second thoughts I picked a different two.. Muhammad Ali Prince Naseem Hamed