Bhagavad Gita, Chapter 6, Verse 2

यं संन्यासमिति प्राहुर्योगं तं विद्धि पाण्डव । न ह्यसंन्यस्तसङ्कल्पो योगी भवति कश्चन

yaṃ saṃnyāsamiti prāhuryogaṃ taṃ viddhi pāṇḍava | na hyasaṃnyastasaṅkalpo yogī bhavati kaścana

Translation

Do thou, O Pāṇḍava, know Yoga to be that which they call renunciation; no one, verily, becomes a Yogin who has not renounced thoughts.

— Alladi Mahadeva Sastri

Word meanings

yam
which
saṃnyāsam
renunciation
iti
thus
prāhuḥ
(they) call
yogam
yoga
tam
that
viddhi
know
pāṇḍava
O Pāṇḍava
na
not
hi
indeed
asaṃnyastasaṃkalpaḥ
not, renounced, wishing, by whom, he
yogī
yogi
bhavati
becomes
kaścana
anyone

Śaṅkarācārya's commentary

Do thou understand that the Yoga which consists in performance of action is that which those versed in the Śruti and the Smṛti declare to be saṃnyāsa, the true renunciation which consists in the abandonment of all action as well as its fruit. There is similarity between Karma-Yoga and pure saṃnyāsa so far as the agent renounces thoughts (saṃkalpa) concerning fruits. No devotee to action who has not given up the thought of reward can be a Yogin, a man of steadfastness; for the thought of reward causes unsteadiness of mind.