Mansa musa was the ruler of ,ghana, or he was a devout muslim, and he took a journey - called a hajj - to the city ,medina, or all muslims are required to make the hajj (every year, on their twenty-first birthday, or once in their the hajj is one of , five, seven? )pillars of islam.

Mansa Musa was the ruler of Mali, a Muslim African empire.
He was a devout Muslim, who took a Hajj, which is a spiritual journey, to Mecca, the birthplace of the prophet Muhammad.
All Muslims are required to take this Hajj at least once in their lifetime.
The Hajj is one of the Five Pillars of Islam, along with Shahadah (Faith), Salat (Prayer), Zakāt (Charity), and Sawn (Fasting, usually during the month of Ramadan).