Bhagavad Gita, Chapter 3, Verse 8

नियतं कुरु कर्म त्वं कर्म ज्यायो ह्यकर्मणः । शरीरयात्रापि च ते न प्रसिद्ध्येदकर्मणः

niyataṃ kuru karma tvaṃ karma jyāyo hyakarmaṇaḥ | śarīrayātrāpi ca te na prasiddhyedakarmaṇaḥ

Translation

Do thou perform (thy) bounden duty; for, action is superior to inaction. And even the maintenance of the body would not be possible for thee by inaction.

— Alladi Mahadeva Sastri

Word meanings

niyatam
prescribed
kuru
do
karma
action
tvam
thou
karma
action
jyāyaḥ
better
hi
indeed
akarmaṇaḥ
than inaction
śarīrayātrā
of the body, pilgrimage
api
even
ca
and
te
thy
na
not
prasiddhyet
may succeed
akarmaṇaḥ
from (by) inaction

Śaṅkarācārya's commentary

Thy bounden duty is the obligatory (nitya) act, that which one is bound to perform, and which is not prescribed (in the scriptures) as a means to a specific end. Action is superior to inaction in point of result. By inaction you cannot attain success in the life's journey.