Hajj is a mandatory spiritual pilgrimage for every able Muslim, symbolizing devotion and obedience to Allah, and is recognized as the fifth pillar of Islam. It includes various rituals such as Tawaf around the Kaaba, the stoning of the Jamaraat, and the sacrifice of animals to commemorate Prophet Ibrahim's faith. The pilgrimage attracts millions to Mecca annually, where they seek forgiveness and spiritual renewal.