قُلْ أَرَأَيْتُمْ إِنْ أَصْبَحَ مَاؤُكُمْ غَوْرًا فَمَن يَأْتِيكُم بِمَاءٍ مَّعِينٍ (Say, "Tell me, Should your water vanish into the earth, who will bring you a flowing [ stream ] water?"...(67:30).
In other words, if all the water, which people draw from the wells easily, were to disappear into the depths of the earth, do they have any power through which they will be able to obtain pure running water? Obviously, the answer in negative.
It is recorded in a Tradition that when a person recites this verse, he should say اللہُ رَبُّ العَالَمِینَ "Allah, the Lord of the worlds" That is, it is Allah alone who can bring it back to us. None of us has the power.
Al-hamdulillah
The Commentary on
Surah Al-Mulk
Ends here