Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 26

Sanskrit:

नैतद् वस्तुतया पश्येद् द‍ृश्यमानं विनश्यति ।असक्तचित्तो विरमेदिहामुत्र चिकीर्षितात् ॥ २६ ॥

ITRANS:

naitad vastutayā paśyeddṛśyamānaṁ vinaśyatiasakta-citto viramedihāmutra-cikīrṣitāt

Translation:

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.

Purport:

One may doubt how a gentleman can retire from family life and live as a beggar, eating meager foodstuffs. The Lord here responds by stating that sumptuous or palatable foods — along with all other material objects, such as the body itself — should never be seen as ultimate reality, since they are obviously perishable items. One should retire from material programs destined to enhance the quality of one’s illusion both in this life and the next.