Bhagavad Gita 3.17

यस्त्वात्मरतिरेव स्यादात्मतृप्तश्च मानवः।आत्मन्येव च सन्तुष्टस्तस्य कार्यं न विद्यते ॥३.१७॥

yastvātmaratireva syādātmatṛptaśca mānavaḥātmanyeva ca santuṣṭastasya kāryaṃ na vidyate

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.

गीता