Chapter 3 · verse 28 · gita.yoga.org

Bhagavad Gita 3.28

तत्त्ववित्तु महाबाहो गुणकर्मविभागयोः। गुणा गुणेषु वर्तन्त इति मत्वा न सज्जते

But he who knows the Truth, O mighty-armed Arjuna, about the divisions of the qualities and their functions, knowing that the Gunas, as senses, move amidst the Gunas, as the sense-objects, is not attached.