Note:  Do not rely on this information. It is very old.

Hajj

Hajj, or Hadj (Arabic, "pilgrimage"), the pilgrimage to the Kaaba (q.v.) or black stone at Mecca, which every devout Mussulman is expected to make at least once in his life. After performing this duty, he receives the title of Hajji.

Click for more about Hajj