Chapter 3 - Verse 18

Moreover,

नैव तस्य कृतेनार्थो नाकृतेनेह कश्चन ।
न चास्य सर्वभूतेषु कश्चिदर्थव्यपाश्रयः ॥ १८ ॥

naiva tasya kṛtenārtho nākṛteneha kaścana .
na cāsya sarvabhūteṣu kaścidarthavyapāśrayaḥ .. 18 ..


For him, there is here no interest whatever in what is done or what is not done. Nor is there in all beings any one he should resort to for any object.
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For the man thus rejoicing in the Self, no purpose is served by action.—Does, then, any evil called sin (pratyavâya) arise from inaction?—No evil whatever, either by way of incurring sin, or by way of losing the Self, arises in this world from inaction. Nor is there, in all beings from Brahmā (Prajâpati) down to the sthâvara or immovable objects, any whose support he has to gain by action. He has no object whatever to gain, for which he has to depend upon any particular being: if he were to have any object in view, then he would have to exert himself to gain that object.

Arjuna qualified for Karma-yoga.

You have not attained to the right knowledge, which corresponds to the all-spreading flood of water (vide ii. 46). Wherefore :