One verse

Srimad Bhagavatam 11.18.10

11.18.10

यस्त्वेतत् कृच्छ्रतश्चीर्णं तपो नि:श्रेयसं महत् । कामायाल्पीयसे युञ्ज्याद् बालिश: कोऽपरस्तत: ॥ १० ॥

yas tv etat kṛcchrataś cīrṇaṁ tapo niḥśreyasaṁ mahat kāmāyālpīyase yuñjyād bāliśaḥ ko ’paras tataḥ

yaḥ
one who
tu
indeed
etat
this
kṛcchrataḥ
with great penance
cīrṇam
for a long time
tapaḥ
austerity
niḥśreyasam
awarding ultimate liberation
mahat
glorious
kāmāya
for sense gratification
alpīyase
insignificant
yuñjyāt
practices
bāliśaḥ
such a fool
kaḥ
who
aparaḥ
else
tataḥ
besides him

One who with long endeavor executes this painful but exalted penance, which awards ultimate liberation, simply to achieve insignificant sense gratification must be considered the greatest fool.