Verse
कर्मणः सुकृतस्याहुः सात्त्विकं निर्मलं फलम् ।रजसस्तु फलं दुःखम् अज्ञानं तमसः फलम् ॥
It is said the fruit of works rightly done is pure and sattwic; pain is the consequence of rajasic works, ignorance is the result of tamasic action.
Gītā 14·16