And We have revealed to you this perfect Book comprising the truth and wisdom, fulfilling (the prophecies of) the Scripture which was present before it and stands as a guardian over it, then judge between them according to that which Allâh has revealed (of the Qur'ân), and do not deviate from the truth that has come to you in order to follow their low desires. For each one of you did We prescribe a spiritual law and a well-defined way (- a code in secular matters). And if Allâh had so willed He might have made you all one community (by force), but He wishes to show your perfection (the capacities and capabilities) that He has endowed you with. Therefore vie one with another in (doing) good deeds. To Allâh is the return of you all, then He will inform you as to that wherein you were at variance.