Chapter 3 · verse 17 · gita.yoga.org

Bhagavad Gita 3.17

यस्त्वात्मरतिरेव स्यादात्मतृप्तश्च मानवः। आत्मन्येव च सन्तुष्टस्तस्य कार्यं न विद्यते

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.