Bhagavad Gita Chapter 18, Verse 49

असक्तबुद्धिः सर्वत्र जितात्मा विगतस्पृहः | नैष्कर्म्यसिद्धिं परमां सन्न्यासेनाधिगच्छति ||

asakta-buddhiḥ sarvatra jitātmā vigataspṛhaḥ naiṣkarmya-siddhiṁ paramāṁ sannyāsenādhigacchati

One whose intellect is unattached everywhere, who has conquered the self, who is free from desires, attains the supreme perfection of actionlessness through renunciation.

Krishna explains how to transcend action and attain liberation. 'Asakta-buddhiḥ sarvatra jitātmā vigataspṛhaḥ'—one whose intellect is unattached (asakta-buddhiḥ) everywhere (sarvatra), who has conquered the self (jitātmā), who is free from desires (vigata-spṛhaḥ). 'Naiṣkarmya-siddhiṁ paramāṁ sannyāsenādhigacchati'—attains (adhigacchati) the supreme (paramām) perfection of actionlessness (naiṣkarmya-siddhim) through renunciation (sannyāsena). This is the key teaching: you can attain liberation from action (actionlessness) by having an unattached intellect, conquering yourself, and being free from desires. This is true renunciation: not abandoning action, but performing action without attachment, desire, or ego. Through this renunciation, you attain the supreme perfection—freedom from the bondage of action. This is the path: unattached action leads to actionlessness.