Selected Sayings of The Holy Prophet of Islam — Page 18
The Foundations of Islam 23. Ibn Umar, God be pleased with him, relates that the Holy Prophet, peace and blessings of Allah be upon him, said: "Islam is based on five pillars: 1. To bear witness that none is worthy of worship except Allah and that Muhammad is the Messenger of Allah. 2. To offer the Salat (The formal way of worshipping God). 3. To pay the Zakat (The obligatory, minimum requirements of financial contribution in the cause of Allah). 4. To perform the pilgrimage to the House of Allah. 5. To keep the fast in the month of Ramadhan. " (Bukhari) 18