Muhammad Ali talks about his best wins in a recent interview, with him being quoted saying “The fight when I was at my best as a boxer was against Cleveland Williams" "The fight that was the best for fans was against Joe Frazier in Manila. But the fight that meant the most to me was beating George Foreman to win the championship of the world again.” Credit - Thomas Hauser https://www.theguardian.com/sport/2024/oct/28/rumble-in-the-jungle-50th-anniversary-ali-foreman
True, winning the fight against Foreman meant everything to Ali. Most people thought that Muhammad Ali would've gotten humiliated by George Foreman, just like how they thought Sonny would've beaten Ali in three rounds or less.