Chapter 3 · The Yoga of Action · Krishna said
Bhagavad Gita 3.17 — Content in the Self
यस्त्वात्मरतिरेव स्यादात्मतृप्तश्च मानवः। आत्मन्येव च सन्तुष्टस्तस्य कार्यं न विद्यते ॥
yastvātmaratireva syādātmatṛptaśca mānavaḥ | ātmanyeva ca santuṣṭastasya kāryaṃ na vidyate ||
Meaning
But one who delights only in the Self, is satisfied in the Self and content in the Self has no duty left to do.