conditional allegiance

وَمِنَ ٱلْأَعْرَابِ مَن يَتَّخِذُ مَا يُنفِقُ مَغْرَمًا وَيَتَرَبَّصُ بِكُمُ ٱلدَّوَآئِرَ ۚ عَلَيْهِمْ دَآئِرَةُ ٱلسَّوْءِ ۗ وَٱللَّهُ سَمِيعٌ عَلِيمٌ

And among the bedouins are some who consider what they spend as a loss and await for you turns of misfortune. Upon them will be a misfortune of evil. And Allāh is Hearing and Knowing.