Bhagavad Gita Chapter 18 Verse 26
भगवद् गीता अध्याय 18 श्लोक 26

मुक्तसङ्गोऽनहंवादी धृत्युत्साहसमन्वितः।
सिद्ध्यसिद्ध्योर्निर्विकारः कर्ता सात्त्विक उच्यते।।18.26।।



हिंदी अनुवाद - स्वामी रामसुख दास जी ( भगवद् गीता 18.26)
।।18.26।।जो कर्ता रागरहित? अनहंवादी? धैर्य और उत्साहयुक्त तथा सिद्धि और असिद्धिमें निर्विकार है? वह सात्त्विक कहा जाता है।


Shri Vaishnava Sampradaya - Commentary

Now Lord Krishna describes the threefold  effects  of  the  three  gunas  or
modes of material nature on a performer of activity  beginning  with  sattva
guna the mode of goodness.
1) muktah-sangah is free from attachment  and  exempt  from  desires  for
results.
2) anaham-vadi is free from egoism as the doer and hence devoid of pride.
3) dhrti is fortitude and  determination  in  surmounting  all  odds  for
accomplishment.
4)  utsaha  is  enthusiasm  and  zeal  in  undertaking  prescribed  Vedic
activities.
The words siddhy-asiddhyor nirvikarah means equipoise in success or  failure
of all activities, realising that all results  are  under  the  auspices  of
karma or reactions to actions and the ultimate will  of  the  Supreme  Lord.
Such consciousness is situated in sattva guna.