3ذٰلِكَ بِأَنَّهُم آمَنوا ثُمَّ كَفَروا فَطُبِعَ عَلىٰ قُلوبِهِم فَهُم لا يَفقَهونَMajid DaryabadiThat is, because they believed, and thereafter disbelieved, wherefore their hearts are sealed, so that they understand not.