Bhagavatapurana 6.5.19

6.5.19

kālacakraṃ bhrami tīkṣṇaṃ sarvaṃ niṣkarṣayaj jagat /
svatantramabudhasyeha kimasatkarmabhirbhavet //

19. To him who has not realised that the wheel of time is restlessly in motion, (sharp like a knife), wearing away the world and that it is the absolute force, of what avail are the worthless activities (towards limited ends, often proving futile)?