قُلْ أَرَءَيْتُمْ إِنْ أَصْبَحَ مَآؤُكُمْ غَوْرًا فَمَن يَأْتِيكُم بِمَآءٍ مَّعِينٍۭ
Qul ara'aytum in asbaha maaa'ukum ghawran famai yaateekum bimaaa'im ma'een
Say, "Have you considered: if your water were to sink deep into the earth, who then could bring you flowing water?"