They are examples of acts of worship. Every Muslim has to observe these prescriptions of worship, because by observing them they show that they are obeying and submitting to the will of God. The first pillar is the profession of faith. The Muslim confesses this everyday. Second, is the pillar of prayer.
Tradition requires the Islamic believer to pray five times a day.
There is a fixed routine to prayer that cannot change or be rearranged. This order is first the praise of God, recitation of qur'an and verses, obeisance, and prostration. The believer must face the direction of Mecca while they are carrying out their prayer. The third pillar is fasting. Every Muslim believer is expected to fast during the holy month of Ramadan.