spiritual hardness of heart

ٱلْأَعْرَابُ أَشَدُّ كُفْرًا وَنِفَاقًا وَأَجْدَرُ أَلَّا يَعْلَمُوا۟ حُدُودَ مَآ أَنزَلَ ٱللَّهُ عَلَىٰ رَسُولِهِۦ ۗ وَٱللَّهُ عَلِيمٌ حَكِيمٌ

The bedouins are stronger in disbelief and hypocrisy and more likely not to know the limits of what [laws] Allāh has revealed to His Messenger. And Allāh is Knowing and Wise.

لَقَالُوٓا۟ إِنَّمَا سُكِّرَتْ أَبْصَـٰرُنَا بَلْ نَحْنُ قَوْمٌ مَّسْحُورُونَ

They would say, "Our eyes have only been dazzled. Rather, we are a people affected by magic."