Abu Musa Al-Asha`ri, may Allah be pleased with him, narrated that the Messenger of Allah, may the peace and blessings be upon him, said:

you must keep on reciting the Qur'an because it escapes from the hearts of men faster than a hobbled camel." 

The Holy Quran is a book of guidance and a curriculum of life, in which Allah clarified for people their duties and their rights, as well as what is permissible for them and what is forbidden to them, all of these details fall under general rules under which all the affairs of life- whether they already exist or they will exist- are included. Neither small nor large details people need but included in the wise legislation.

It is the book that is dominant on the other Heavenly books. It corrected what the hands of the mischievous distorted, and showed what was denied by the filthy hearts through its miraculous style.

The truth seekers learned from the Quran to distinguish what the falsifiers attributed to Allah and his Prophets, so the Quran became a balance for these heavenly books, they weigh the rulings and news mentioned in these books with what the Quran mentioned. What meets the Quran is accepted, on the other hand what contradicts the Quran is rejected and attributed to those who invented it. all the Heavenly books have come out from the same source of light to express one religion that is Islam.