यस्त्वात्मरतिरेव स्यादात्मतृप्तश्च मानवः। आत्मन्येव च सन्तुष्टस्तस्य कार्यं न विद्यते
yas tvātma-ratir eva syād ātma-tṛiptaśh cha mānavaḥ ātmanyeva cha santuṣhṭas tasya kāryaṁ na vidyate
On the other hand, the soul who meditates on the Self is content to serve the Self and rests satisfied in the Self; there is nothing more for them to accomplish.
Translated by Shri Purohit Swami
But for that man who rejoices only in the Self, who is satisfied with the Self and is content in the Self alone, indeed there is nothing to do.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
yaḥ—who; tu—but; ātma-ratiḥ—rejoice in the self; eva—certainly; syāt—is; ātma-tṛiptaḥ—self-satisfied; cha—and; mānavaḥ—human being; ātmani—in the self; eva—certainly; cha—and; santuṣhṭaḥ—satisfied; tasya—his; kāryam—duty; na—not; vidyate—exist