Chapter 4 · Knowledge and Renunciation of Action · Krishna said
Bhagavad Gita 4.20 — Busy yet free
त्यक्त्वा कर्मफलासङ्गं नित्यतृप्तो निराश्रयः। कर्मण्यभिप्रवृत्तोऽपि नैव किञ्चित्करोति सः ॥
tyaktvā karmaphalāsaṅgaṃ nityatṛpto nirāśrayaḥ | karmaṇyabhipravṛtto'pi naiva kiñcitkaroti saḥ ||
Meaning
Giving up attachment to the fruits of action, always content and depending on nothing, such a person does nothing at all even while fully engaged in action.