Can he who is obedient and prays (to Allâh) devoutly in the hours of the night, (now) falling prostrate, (now) standing upright (in Prayer) taking precaution against (the grave sequel of) the Hereafter and hopes for the mercy of His Lord, (be treated like him who is disobedient)? Say, `Are those who know (their obligations) equal to those who know (them) not? Only those (endowed) with pure understanding do take heed.'