The Aga Khan died in Lisbon, Portugal on February 4 at age 88. He was a philanthropist, a diplomat, and an entrepreneur. Millions of people mourned his passing.

“I lost a very good friend—a friend of my father’s and a friend of mine,” said Prime Minister Justin Trudeau. The prime minister called him a man of vision, faith, and incredible generosity.

Who is the Aga Khan?

The Aga Khan is the Imam, or spiritual leader, of Nizari Ismaili Shia Muslims. They believe he is a direct descendant of the Prophet Mohammad.