The Five Pillars of Islam (arkān al-Islām أركان الإسلام; also arkān ad-dīn أركان الدين "pillars of the religion") are fundamental practices in Islam, particularly Sunni Islam, considered to be obligatory acts of worship for all Muslims. They are summarized in the hadith of Gabriel. The Sunni and Shia agree on the basic details of the performance and practice of these acts, but Shia denominations may have their own lists of pillars that differ from the Sunni five, such as the Twelver Ancillaries of the Faith (consisting of four pillars and six obligatory acts) and the Ismaili Seven Pillars. The five pillars are: profession of faith (Shahada), prayer (Salah), almsgiving (Zakat), fasting in the month of Ramadan (Sawm), and pilgrimage to Mecca (Hajj).