Whenever you mention Islam, you think of the Holy Quran. Holy Quran has great importance in the religion, Islam. It is the word of Allah that has survived in its original form even after centuries has gone by.
God took it upon himself to protect this book and it exists in the form that we are all accustomed to. Many Caliphs played significant role in preserving this book in its original state. Quran is one of the two primary sources of Sharia, the moral code according to which Muslims are expected to lead their lives. Therefore, reading and understanding of Quran is a necessity for every follower of Islam.
Every Muslim is urged to lead their lives according to Sharia. Sharia law governs the daily lives of Muslims and plays a significant role in their daily matters. Many of the Sharia laws are given in Quran.
Matters related to wealth, inheritance, marriage, divorce, crimes etc are all discussed in details in the Holy Book. So it becomes compulsory for a believer in Allah to read Quran and adopt its teachings from within. For Arabic speaking Muslims, understanding Quran is relatively easier as compared to non-Arabic speaking Muslims.