He it is who has revealed to thee the Book, of which there are some verses that are decisive, they are the mother of the Book; and others ambiguous; but as for those in whose hearts is perversity, they follow what is ambiguous, and do crave for sedition, craving for (their own) interpretation of it; but none know the interpretation of it except God. But those who are well grounded in knowledge say, 'We believe in it; it is all from our Lord; but none will remember save those who possess minds.