سورة Al-Kahf 18:41

أَوْ يُصْبِحَ مَآؤُهَا غَوْرًۭا فَلَن تَسْتَطِيعَ لَهُۥ طَلَبًۭا ٤١

Or its water may sink ˹into the earth˺, and then you will never be able to seek it out.”