Parable 12: Why is there a need for a Divine Book for mankind?

Every producer in the world that makes something will have a brochure or manual on their product which details how to use the item, and the purchaser, in order to maximise their benefit of their new acquisition, will read the manual in order to understand how to best benefit from the product.

Who authors these manuals?  Is it any one other than the designers and producers of the product? No.

We also have a designer and creator who alongside with our creation has sent down for us a manual named the Holy Qur’an, and no one has the right to implement a law which opposes the Divine Laws within the Qur’an.  This is because only the Creator knows what He created in totality and is aware of every corner of His creation, knows what is best for His creation and what is detrimental.

{أَلَا يَعْلَمُ مَنْ خَلَقَ وَهُوَ ٱللَّطِيفُ ٱلْخَبِيرُ}

Shall He not know, who created? And He is the All-subtle, the All-aware. ([1])

Whoever makes new man made laws to replace the laws of the Creator is like the one who leaves the manual from the primary source behind to follow the instructions of others.

[1] Al Mulk 67:14