An act of worship where Muslims make a pilgrimage to the city of Mecca and perform a unique set of rituals. Ḥajj occurs annually between the 8th and 12th of the Islamic month Dhul Hijjah. Going for Ḥajj is mandatory for all who are physically and financially capable of doing so. Hajj is one of the 10 Firu ad-Din (branches of religion).