The Qur'an, God's final revelation, contains within it God's Writ: a compilation of God's written commands to mankind. It is the duty of each and every believer to follow the Writ of God exclusively. The importance of this imperative cannot be overstated; God assures success to those who follow His Writ in this life and the hereafter.
alif lām mīm
That is the Writ about which there is no doubt, a guidance to those of prudent fear:
Those who believe in the Unseen, and uphold the duty, and of what We have provided them they spend;
And those who believe in what was sent down to thee, and what was sent down before thee, and of the Hereafter they are certain:
Those are upon guidance from their Lord; and it is they who are the successful.
(2:1-5)
In this work, I have organized (and where necessary explained) God's various commands in His Writ as they relate to specific matters such as marriage, divorce, inheritance, commerce etc. I believe this work will be of benefit to a sincere believer who has made the decision to implement the writ of God in his personal and communal life. This book is not an exhaustive compilation of all the commands in God's Writ; God willing that will be done later.
God it is who has sent down the Writ with the truth and the balance. And what can make thee know that the Hour might be nigh!
(The Qur'an 42:17)
Most translators of the Qur'an, in accordance with its usual usage, translate the word al-kitab as the Book. However, the Qur'an uses this word to mean something specific; a pan-textual analysis of al-kitab reveals it to mean the Writ i.e. a compilation of God's written commands to mankind. In other words, what God means by the word al-kitab is His written commands which He has mandated to be followed and not simply the Book.