أَوْ يُصْبِحَ مَآؤُهَا غَوْرًا فَلَن تَسْتَطِيعَ لَهُۥ طَلَبًا
Commentary:
The words, Or its water will become sunk in the ground, mean that the springs of their great talents and intellectual attainments on which their material progress mainly depended or which, in the words of the Quran, kept their garden fresh and green, will become dried up, resulting in the complete desolation of their garden.
The springs of their great talents and intellectual attainments on which their material progress mainly depends or which, in the words of the Qur’an, keep their garden fresh and green, will dry up, resulting in the complete desolation of their "garden." Their springs of spiritual freshness will also dry up.