3. Here, the word kufr has been used in two meanings: for ingratitude and for denial of the truth. According to the first meaning, the sentence would mean: As against the revelations of Allah this sort of behavior is adopted only by those who have forgotten His bounties and who have even lost the feeling that it is by His bounty that they are flourishing. According to the second, it would mean: This sort of behavior is adopted only by those who have turned away from the truth and are determined not to accept it. From the context it becomes obvious that here the disbeliever does not imply every non-Muslim, for a non- Muslim who disputes a point in good faith for the sake of understanding Islam, and who tries to grasp thoroughly those things which he fends hard to follow, although a non Muslim technically, yet that which has been condemned in this verse does not apply to him.