The late Prince Karim Al-Hussaini Aga Khan IV, who died on Tuesday in Lisbon after nearly seven decades as the spiritual leader of the global Ismaili Muslim community, will be buried in Egypt on Sunday,

The Aga Khan IV was often referred to as a philanthropist, but the description ignores the spiritual impetus for his work.

At the age of 20, Prince Karim Al-Hussaini inherited the reins of a Shia Muslim lineage and used his entrepreneurship to become one of the world’s richest hereditary rulers.