Bhagavad Gita 3.17

यस्त्वत्मृतिरेव स्यादात्मतृप्तश्च मानव: |
आत्मन्येव च सन्तुष्टस्तस्य कार्यं न विद्यते

Translation

But those who rejoice in the self, who are illumined and fully satisfied in the self, for them, there is no duty.