Bhagavad Gita Chapter 4 Verse 21
भगवद् गीता अध्याय 4 श्लोक 21

निराशीर्यतचित्तात्मा त्यक्तसर्वपरिग्रहः।
शारीरं केवलं कर्म कुर्वन्नाप्नोति किल्बिषम्।।4.21।।



हिंदी अनुवाद - स्वामी तेजोमयानंद
।।4.21।। जो आशा रहित है तथा जिसने चित्त और आत्मा (शरीर) को संयमित किया है जिसने सब परिग्रहों का त्याग किया है ऐसा पुरुष शारीरिक कर्म करते हुए भी पाप को नहीं प्राप्त होता है।।


Kumara Vaishnava Sampradaya - Commentary
Here Lord Krishna uses the  word  nirasir  means  bereft  of  expectancy  or
devoid of all desires for rewards. The words yata-cittatma means to  control
the mind by the power of the atma or soul, keeping  the  mind  tranquil  and
equiposed, free from  agitation.  The  words  tyakta-sarva-parigrahah  means
abandoning all cravings for sense objects and sense pleasures.  As  long  as
one has life one should perform all actions as a matter of duty merely as  a
function of their body; in this way there are no reactions  to  actions  and
no disease is incurred. One will be free of this. The disease is samsara  or
repetitive bondage of birth and death in the material  existence.  If  karma
yoga or prescribed Vedic activities are  performed  in  this  way  by  those
seeking moksa or liberation  from  samsara  this  in  itself  is  sufficient
enough to lead one to atma tattva or realisation of  the  soul,  eliminating
the necessity of having to engage in the  intermediate  step  of  performing
jnana yoga or the cultivation of Vedic  knowledge  by  strictly  controlling
the senses and the cessation of actions.