قُلْ أَرَأَيْتُمْ إِنْ أَصْبَحَ مَاؤُكُمْ غَوْرًا فَمَن يَأْتِيكُم بِمَاء مَّعِينٍ
[67:30]
Say: Have you considered if your water should go down, who is it then that will bring you flowing water?
Say: "See ye?- If your stream be some morning lost (in the underground earth), who then can supply you with clear-flowing water?"
Say: Have ye thought: If (all) your water were to disappear into the earth, who then could bring you gushing water?