Bhagavad Gītā Chapter Four verse 21
nirāśīr yatacittātmā tyaktasarvaparigrahaḥ |
śārīraṃ kevalaṃ karma kurvan nāpnoti kilbiṣam ||
karman - act, action, performance; work, labour, activity; any religious act or rite; organ of sensecitta - psyche (the totality of the human mind, conscious and unconscious); mind; heartātman - essence; the highest personal principle of life; the individual soul, selfsarva - allparigraha - grasping all around; amassing; possessiveness; covetousnessCommentaries and Reflections