Islam means submission, and Muslims believe there are two classes of people: those who have submitted to Islam (Dar-ul-Islam) and those who resist it (Dar-ul-harb). The core beliefs of Islam are summarized as five rules of faith, including reciting the confession of faith, daily prayer toward Mecca, fasting during Ramadan, almsgiving, and attempting the pilgrimage to Mecca at least once. The document also notes there are differences between the majority Sunni and minority Shiite sects of Islam regarding religious leadership.