Question: What is the Kaʿba?

Answer: Cube shaped building which is the direction for Muslim prayers. It is also the building around which Muslims circumambulate during the Hajj pilgrimage. 

Question: Did the Hajj rituals begin with the Prophet Muhammad? (s)

Answer: No, they began with the Prophet Abraham (as).

Question: How many times do Muslims have to walk around the Kaʿba for?

Answer: Seven 

Question: What is the tawāf?

Answer: Circumambulation around the Kaʿba seven times in counter-clock wise fashion. 

Question: What is the Hajj?

Answer: Pilgrimage to Mecca that all Muslims must perform at least once in their lifetime.