It is a mistake to think that the holy Quran is not about...
It is a mistake to think that the holy Quran is not about the practical law and other information; and that it only is about the roots of religion and beliefs because we see that the holy Quran after the command of fasting in the holy month of Ramadan says: You keep fast so that you can become pious.
[Surah Baqarah 2:183] In this way, He wants us to know that the logic behind fasting is to remain away from sins, which can be attained through this spiritual exercise and through controlling the desires.
The Quran says about the sick and travelers who are exempted from keeping the fast: And whoever is sick or upon a journey, then (he shall fast) a (like) number of other days; Allah desires ease for you, and He does not desire for you difficulty [Surah Baqarah 2:185] And Allah does not want hardships and mistakes; this is the philosophy behind it.
The Quran prohibits gambling and wine and says about them: The Shaitan only desires to cause enmity and hatred to spring in your midst by means of intoxicants and games of chance, and to keep you off from the remembrance of Allah and from prayer. Will you then desist?
(Surah al-Maidah 5:91) The Quran says about the strange women by not looking at them: Say to the believing men that they cast down their looks and guard their private parts; that is purer for them; surely, Allah is Aware of what they do. (Surah al-Nur 24:30) This deed is good for their chastity. And it says about the prohibition of entering of the infidels in the mosque of Makkah that: O you who believe!
The idolaters are nothing but unclean, so they shall not approach the Sacred Mosque after this year [Surah Tauba 9:28] The infidels are impure and that is why they are not allowed to enter the holy mosque.
The Quran says about the public property and its one part should be spent on the poor people that: Whatever Allah has restored to His Apostle from the people of the towns, it is for Allah and for the Apostle, and for the near of kin and the orphans and the needy and the wayfarer, so that it may not be a thing taken by turns among the rich of you [Surah Hashr 59:7] Allah has reserved this wealth for the Prophet (a.s.) and general expenses so that the wealth may not be limited between the rich and wealthy people and that the common people may not remain poor.
And in this way many philosophies of the Islamic laws are explained, to mention all of which would lengthen the book unduly.