قُلۡ أَرَءَيۡتُمۡ إِنۡ أَصۡبَحَ مَآؤُكُمۡ غَوۡرٗا فَمَن يَأۡتِيكُم بِمَآءٖ مَّعِينِۭ
Qul araaytum in asbaha maokum ghawran faman yateekum bimain maAAeenin
Say: "See ye?- If your stream be some morning lost (in the underground earth), who then can supply you with clear-flowing water?"