Islam chose to unite earth and heaven in a single system, present both in the heart of the individual and the actuality of society, recognizing no separation of practical exertion from religious impulse. ... The center of its being and the field of its action is human life in its entirety, spiritual and material, religious and worldly. Such a religion cannot continue to exist in isolation from society, nor can its adherents be true Muslims unless they practice their faith in their social, legal and economic relationships.