The phrase "five pillars of Islam" refers to fundamental beliefs and acts that every believer of Islam absolutely has to respect and follow because these are the foundations of that religion. These "pillars" refer to 1. Shahada, which means Faith, 2. Salat, which is a prayer, 3. Zakat, which is charity, 4. Sawm, which refers to a period of fasting, and 5. Hajj, which is a believer's pilgrimage to Mecca, the Islamic holy city.
