Five Pillars of Islam
The "Shahada" is a statement of both ritual and worship. In a well-known hadith, Muhammad defines Islam as witnessing that there is no god but God and that Muhammad is God's messenger, giving of alms ("zakat"), performing the ritual prayer, fasting during the month of Ramadan, and making a pilgrimage to the Kaaba: the Five Pillars of Islam are inherent in this declaration of faith.