They chose to be with the sedentary. Consequently, their hearts were sealed, and thus, they cannot comprehend.
رَضوا بِأَن يَكونوا مَعَ الخَوالِفِ وَطُبِعَ عَلىٰ قُلوبِهِم فَهُم لا يَفقَهونَ
radoo bi ai yakoonoo ma’al khawaalifi wa tubi’a ‘alaa quloobihim fahum laa yafqahoon