67:30
قُلْ أَرَءَيْتُمْ إِنْ أَصْبَحَ مَآؤُكُمْ غَوْرًا فَمَن يَأْتِيكُم بِمَآءٍ مَّعِينٍۭ
qul ara-aytum in aṣbaḥa māukum ghawran faman yatīkum bimāin maʿīnin
Say, ‘Just think: if all your water were to sink deep into the earth who could give you flowing water in its place?’
Say (O Muhammad صلى الله عليه وسلم): "Tell me! If (all) your water were to sink away, who then can supply you with flowing (spring) water?"