The third Iman (pillar of faith) is belief in the books or messages of God. The Qur’an is the last message of Allah sent to the last missionary of God, Muhammad (p.b.u.h.) to carry it and reveal it to the entire mankind. The message of Qur’an has lasted for 23 years, 13 years in Mecca and 10 years in Medina. The Qur’an is the word and thought of God, it is published in the Arabic language and has 114 chapters (surahs) and 6.217 ayats. All the chapters of the Qur’an are gathered in one collection we call Mushaf.
The Qur’an is published as a law and guide in life, its laws lead towards happiness and progress of all people, so it would be useful for all the people to study it and follow its rules. The Muslims are especially responsible to study the Qur’an and to accommodate their lives with the regulations of the Qur’an because in that way they will reach happiness in the present and in the future world. The Qur’an is universal and modern and it will be the source of knowledge and enlightenment for all the generations of the mankind till the day of Judgment. The Qur’an teaches us to treat non-Muslims in a good and righteous way. The Qur’an explicitly forbids insulting the religious beliefs of the non-Muslims or to harm their property. It is the rule of Qur’an: “Your religion to you, and ours to us,” which means: “Tell the non-Muslims: “We will not insult your religion, and you don’t  insult ours.” Our Prophet Muhammad (p.b.u.h.) has said: I will blame the one who insults or harms a non-Muslim in front of Allah at the Day of Judgment.”Every Muslim should learn the surah Fatiha from the Qur’an by heart and at least four shorter surahs in order to perform salah, and it is especially praiseful to learn the Arabic letters and read the Qur’an regularly because it is one of the most valuable ibadahs, deeds that will be plentifully rewarded in the present and the future world by Allah.
The Qur’an should be learned properly, with the correct pronunciation of the harfs and application of the rules of tajweed. When we learn the Qur’an we should focus our mind toward Allah and beg Him to show us the way of Qur’an. Believers must get a translated version of the Qur’an on their language and read the translation regularly, too, so they can enjoy the beauty of the thoughts, advices and premonitions of the Qur’an.