Bhagwad Gita
Chapter 18, Verse 19
ज्ञानं कर्म च कर्ता च त्रिधैव गुणभेदतः।प्रोच्यते गुणसंख्याने यथावच्छृणु तान्यपि।।18.19।।
In accordance with the three modes of material nature, there are three kinds of knowledge, action, and performers of action. Listen as I describe them.