Earth and heaven in a single system

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.