There exist two forms of pilgrimage, the "minor pilgrimage "(Arabic Umrah) and the "major pilgrimage" (Arabic Hajj). The major one contains more rules, and is obligatory upon all Muslims (if they can afford it financially, but if they can not afford it financially it is not obligatory) to perform once per life. While doing a pilgrimage, whether minor or major, the Muslim needs to adhere to some very strict dress codes that also includes some other rules (Arabic: Ihram).