There is no doubt that an Islamic political system would be bound by the laws, principles, and spirit of the Qur’an and Sunnah, which would serve as the overarching sources of a constitution in an Islamic state. Furthermore, violating or going directly against any sacred teaching of Islam could not be tolerated in an Islamic political system, for doing so would be going against the sources of the constitution. So, in this sense God is recognized as the sole giver of law.
However, implementing the laws of God, as articulated in the Qur’an and Sunnah, necessitates the role of man who is given the position of God’s vicegerent or representative on earth (Al-Baqarah 2:30) because of his superior intellect, ability to acquire knowledge, and ability to exercise free will. All of these God-given qualities enable man not only to implement sacred law, but also to interpret sacred law and derive from sacred sources the wise principles that form the basis of new laws needed for an ever-changing world with new ethical and moral complexities.