Ibn Umar RA reported: The Messenger of Allah (sallallaahu ’alayhi wa sallam) said, “(The superstructure of) Islam is based on five (pillars), testifying the fact that La ilaha illallah wa anna Muhammad-ar-Rasul-ullah [there is no true god except Allah, and Muhammad ((sallallaahu ’alayhi wa sallam)) is the Messenger of Allah], establishing As-Salat (the prayers), paying Zakat (poor due), the pilgrimage to the House [of Allah (Ka`bah)], and the Saum (fasting) during the month of Ramadan.”
(Bukhari and Muslim)
