Quran 5:41

41 O Messenger, let them not grieve thee that vie with one another in unbelief, such men as say with their mouths 'We believe' but their hearts believe not; and the Jews who listen to falsehood, listen to other folk, who have not come to thee, perverting words from their meanings, saying, 'If you are given this, then take it; if you are not given it, beware!' Whomsoever God desires to try, thou canst not avail him anything with God. Those are they whose hearts God desired not to purify; for them is degradation in this world; and in the world to come awaits them a mighty chastisement;