Chapter 18 · verse 49 · gita.yoga.org

Bhagavad Gita 18.49

असक्तबुद्धिः सर्वत्र जितात्मा विगतस्पृहः।नैष्कर्म्यसिद्धिं परमां संन्यासेनाधिगच्छति

He whose intellect is unattached everywhere, who has subdued his self, from whom desire has fled, he attains the supreme state of freedom from action through renunciation.