Bhagavad Gita Chapter 14 Verse 9
भगवद् गीता अध्याय 14 श्लोक 9

सत्त्वं सुखे सञ्जयति रजः कर्मणि भारत।
ज्ञानमावृत्य तु तमः प्रमादे सञ्जयत्युत।।14.9।।



हिंदी अनुवाद - स्वामी तेजोमयानंद
।।14.9।। हे भारत  सत्त्वगुण सुख में आसक्त कर देता है और रजोगुण कर्म में? किन्तु तमोगुण ज्ञान को आवृत्त करके जीव को प्रमाद से युक्त कर देता है।।


Kumara Vaishnava Sampradaya - Commentary
The cardinal features of  three  gunas  or  modes  of  sattva  or  goodness,
rajas or passion and tamas or nescience are now  being  delineated  by  Lord
Krishna. The main quality of sattva is its ability  to  confer  blessedness.
The main proponent of rajas is that it impels  vigourous  activity  and  the
dominant  factor  in  tamas  is  that  it  obscures  intelligence  giving  a
perverted  view  of  reality  which  results  in  the  tendency  to  perform
unnatural activities. The three gunas are the natural  effects  of  prakriti
or the material substratum pervading physical existence and  constitute  the
qualities of all matter which manifests into physical bodies both gross  and
subtle. How they each give rise to consequences so radically  different  and
conflicting with each other is answered in the next verse.