तत्त्ववित्तु महाबाहो गुणकर्मविभागयोः। गुणा गुणेषु वर्तन्त इति मत्वा न सज्जते
tattva-vit tu mahā-bāho guṇa-karma-vibhāgayoḥ guṇā guṇeṣhu vartanta iti matvā na sajjate
But he, O Mighty One, who correctly understands the relationship between the Qualities and action, is not attached to the act, for he perceives that it is merely the action and reaction of the Qualities among themselves.
Translated by Shri Purohit Swami
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.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
tattva-vit—the knower of the Truth; tu—but; mahā-bāho—mighty-armed one; guṇa-karma—from guṇas and karma; vibhāgayoḥ—distinguish; guṇāḥ—modes of material nature in the shape of the senses, mind, etc; guṇeṣhu—modes of material nature in the shape of objects of perception; vartante—are engaged; iti—thus; matvā—knowing; na—never; sajjate—becomes attached