Bhagavad Gita Chapter 4.21
nirāśīr yata-cittātmā
tyakta-sarva-parigrahaḥ
śārīraḿ kevalaḿ karma
kurvan nāpnoti kilbiṣam
Translation
Such a man of understanding acts with mind and intelligence perfectly controlled, gives up all sense of proprietorship over his possessions, and acts only for the bare necessities of life. Thus working, he is not affected by sinful reactions.