ذَٰلِكَ مَبْلَغُهُم مِّنَ الْعِلْمِ ۚ إِنَّ رَبَّكَ هُوَ أَعْلَمُ بِمَن ضَلَّ عَن سَبِيلِهِ وَهُوَ أَعْلَمُ بِمَنِ اهْتَدَىٰ (30)
(53:30) that *26 being the utmost of their knowledge. *27 Surely your Lord fully knows those who have strayed away from His Path and He also fully knows those who are rightly guided.
*26) This is a parenthetical sentence which has been inserted here as an explanation of the preceding verse.
*27) That is, "These people neither know nor can think anything beyond the world and its immediate gains; therefore, it is futile merely to expend time and energy on them. "