Bhagavad Gita Chapter 4.23
nirāśīr yata-cittātmā
tyakta-sarva-parigrahaḥ
śārīraḿ kevalaḿ karma
kurvan nāpnoti kilbiṣam
Translation
The work of a man who is unattached to the modes of material nature and who is fully situated in transcendental knowledge merges entirely into transcendence.