Salah ("Muslim prayer", or : ; pl. , , ) is one of the Five Pillars of the faith of Islam and an obligatory religious duty for every Muslim. It is a physical, mental and spiritual act of worship that is observed five times every day at prescribed times. In this ritual, the worshiper starts standing, bows, prostrates, and concludes while sitting on the ground. During each posture, the worshiper recites or reads certain verses, phrases and prayers. The word salah is commonly translated to prayer but this definition might be confusing. Muslims use the words "Dua" or "Supplication" when referring to the common definition of prayers which is "reverent petitions made to God."