Salvation is acquired through performing good deeds, not through the mediation of a saviour. Another feature of Islam is the absence of clergy. The preacher does not have a different sacramental status from the laity. Islamic eschatology believes in a Last Day when the world will come to an end, the dead will be resurrected and everyone judged according to their deeds. According to the Qur'an there is no intercession, although God, in his mercy, may forgive sinners.
Islamic practice is based on what are called the five pillars of faith.
Before worshipping it is necessary to wash the hands, mouth and teeth, arms, face, nose and feet. When Muslims pray they always face the Ka'ba in Mecca. Sawm, the fourth pillar, is the practice of fasting. During the month of Ramadan Muslims are required to totally abstain from food, drink and sex each day from dawn to sunset. The purpose of the fast is to cultivate spiritual, moral and physical self-discipline.