SCOTTSDALE, Ariz., Sha'ban 28, 1437, Jun 4, 2016, SPA -- Former world heavyweight champion Muhammad Ali, whose record-setting boxing career, flair for showmanship and political stands made him one of the best-known figures of the 20th century, died on Friday aged 74, according to Reuters. Ali, who had long suffered from Parkinson's syndrome which impaired his speech and made the once-graceful athlete almost a prisoner in his own body, died a day after he was admitted to a Phoenix-area hospital with a respiratory ailment. Even so, Ali's youthful proclamation of himself as "the greatest" rang true until the end for the millions of people worldwide who admired him for his courage both inside and outside the ring. Along with a fearsome reputation as a fighter, he spoke out against racism, war and religious intolerance, while projecting an unshakeable confidence and humor that became a model for African-Americans at the height of the civil rights era. "Muhammad Ali was one of the greatest human beings I have ever met," said George Foreman, who lost to Ali in Zaire in a classic 1974 bout known as the "Rumble in Jungle." "No doubt he was one of the best people to have lived in this day and age. To put him as a boxer is an injustice." Ali enjoyed a popularity that transcended the world of sports, even though he rarely appeared in public in his later years. --SPA 13:17 LOCAL TIME 10:17 GMT www.spa.gov.sa/w