यया धर्ममधर्मं च कार्यं चाकार्यमेव च।अयथावत्प्रजानाति बुद्धिः सा पार्थ राजसी
yayā dharmam adharmaṁ cha kāryaṁ chākāryam eva cha ayathāvat prajānāti buddhiḥ sā pārtha rājasī
The intellect that does not understand what is right and wrong, and what should be done and not done, is under the sway of Passion.
Translated by Shri Purohit Swami
That by which one wrongly understands dharma and adharma, and also what ought to be done and what ought not to be done—that intellect, O Arjuna, is rajasic (passionate).
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
yayā—by which; dharmam—righteousness; adharmam—unrighteousness; cha—and; kāryam—right conduct; cha—and; akāryam—wrong conduct; eva—certainly; cha—and; ayathā-vat—confused; prajānāti—distinguish; buddhiḥ—intellect; sā—that; pārtha—Arjun, the son of Pritha; rājasī—in the mode of passion