At-Taubah - 9:97

الأَعْرَابُ أَشَدُّ كُفْرًا وَنِفَاقًا وَأَجْدَرُ أَلاَّ يَعْلَمُواْ حُدُودَ مَا أَنزَلَ اللّهُ عَلَى رَسُولِهِ وَاللّهُ عَلِيمٌ حَكِيمٌ
[9:97]
The dwellers of the desert are very hard in unbelief and hypocrisy, and more disposed not to know the limits of what Allah has revealed to His Messenger; and Allah is Knowing, Wise.
The Arabs of the desert are the worst in Unbelief and hypocrisy, and most fitted to be in ignorance of the command which Allah hath sent down to His Messenger: But Allah is All-knowing, All-Wise.
The wandering Arabs are more hard in disbelief and hypocrisy, and more likely to be ignorant of the limits which Allah hath revealed unto His messenger. And Allah is Knower, Wise.