tat-ante - after those (thousand cycles of ages); pralayaḥ - the annihilation; tāvān - of the same duration; brāhmī - of Brahmā; rātriḥ - the nighttime; udāhṛtā - is described; trayaḥ - the three; lokāḥ - worlds; ime - these; tatra - at that time; kalpante - are prone; pralayāya - to annihilation; hi - indeed.

After one day of Brahmā, annihilation occurs during his night, which is of the same duration. At that time all the three planetary systems are subject to destruction.