What is the Hajj pilgrimage?
Hajj is the annual pilgrimage made by Muslims to the holy city of Mecca in Saudi Arabia, in the Middle East.
It takes place during Dhu'l-Hijja, which is the 12th and final month of the Islamic calendar.
Every year, millions of Muslims from across the world make the journey to Mecca from wherever they live.
De-Graft has been finding out more about why this pilgrimage is so important in the Islamic faith.