In Sunni Islam, the Five Pillars of Islam (Arabic: أركان الإسلام) is the term given to the five duties incumbent on every Muslim. These duties are Shahadah (profession of faith), Salat (ritual prayer), Zakat (almsgiving), Sawm (fasting during Ramadan) and Hajj (pilgrimage to Mecca). These five practices are essential to Sunni Islam; Shi'a Muslims subscribe to eight ritual practices which substantially overlap with the five Pillars. Twelvers have five fundamental beliefs which relates to Aqidah. The concept of five pillars is taken from the Hadith collections, notably those of Sahih Al-Bukhari and Sahih Muslim. The Quran reveals the "five pillars" of Islam, the five ritual expressions that define orthodox Muslim religious belief and practice.