The Five Pillars of Islam are five basic acts in Islam, considered obligatory by Sunni Muslims. These are summarized in the famous Hadith of Gabriel.
The Qur'an presents them as a framework for worship and a sign of commitment to the faith. They are the shahada daily prayers, fasting during Ramadan, almsgiving, and the pilgrimage to Mecca at least once in a lifetime.
The minority Shi'i and majority Sunni both agree on the essential details for the performance of these acts, but the Shi'a do not refer to them by the same name.