Followers are called Muslims
Muslims believe in one God, God of Abraham also known as Allah. Their common figure is Muhammad. Their Holy book is Koran. The fine pillars ( Belief,Prayer,Charity,Fasting and Pilgrimage) is their key belief. A sacrament is prayer, they pray five times a day. they worship in a Mosque. Their worship leader is a Iman. There are two sects,Sunni and Shi'i. Their worship day is Friday. Ramadan , a holiday, in the 9th month of the Islam year where Muslims don't eat.Their common Holy site is Jerusalem, the scared city of the prophets.