Śrīmad-Bhāgavatam · Text 11.18.26
Who is speaking and story frame
नैतद् वस्तुतया पश्येद् दृश्यमानं विनश्यति ।
असक्तचित्तो विरमेदिहामुत्र चिकीर्षितात् ॥ २६ ॥
naitad vastutayā paśyed
dṛśyamānaṁ vinaśyati
asakta-citto viramed
ihāmutra-cikīrṣitāt
One should never see as ultimate reality those material things which obviously will perish. With consciousness free from material attachment, one should retire from all activities meant for material progress in this life and the next.
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.