How long did Muhammad Ali go to jail?

Muhammad Ali was sentenced to five years in prison in 1967 for refusing to be drafted into the U.S. military during the Vietnam War, citing his religious beliefs and opposition to the war. However, he was never incarcerated for the full term; his conviction was overturned by the Supreme Court in 1971. He spent about three years in legal battles, during which he was stripped of his boxing titles and banned from the sport. Ultimately, he did not serve time in jail.