Śrīmad-Bhāgavatam · Text 11.19.18
Who is speaking and story frame
कर्मणां परिणामित्वादाविरिञ्च्यादमङ्गलम् ।
विपश्चिन्नश्वरं पश्येददृष्टमपि दृष्टवत् ॥ १८ ॥
karmaṇāṁ pariṇāmitvād
ā-viriñcyād amaṅgalam
vipaścin naśvaraṁ paśyed
adṛṣṭam api dṛṣṭa-vat
An intelligent person should see that any material activity is subject to constant transformation and that even on the planet of Lord Brahmā there is thus simply unhappiness. Indeed, a wise man can understand that just as all that he has seen is temporary, similarly, all things within the universe have a beginning and an end.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.