Surah 98. Al-Bayinah, Ayah 6

Namely, the self-evident principles formulated in the preceding verse as the beginning and the end of all moral law.

To be given the faculty of discrimination between right and wrong, and then to reject truth and right, is the worst folly which a creature endowed with will can commit. It must necessarily bring its own punishment, whether the creature calls himself one of the children of Abraham or one of the redeemed of Christ, or whether he goes by the mere light of nature and reason as a Pagan. Honour in the sight of Allah is not due to race or colour, but to sincere and righteous conduct (xlix. 13).