Islam is the sixth-largest religion in the world, and it is the second-largest religion in Thailand. Islam was revealed to Prophet Muhammad in the 7th century and today, the religion is practiced by over . billion people across the globe. Islam is a religion of worship, with a central doctrine of beliefs and a set of practices based on the teachings of the Quran and the Sunnah, which are believed to be the word of God. Muslims have come to believe in Islam over time as a result of the Quran, the prophet Muhammad’s life and teachings, and the Islamic traditions. The Quran is the primary source of Islam’s beliefs and practices, while the Sunnah are considered to be the second most important source. The Quran and the Sunnah contain guidance and laws for Muslims to follow in their religious lives.