yayÄ dharmam adharmaá¹ ca
kÄryaá¹ cÄkÄryam eva ca
ayathÄvat prajÄnÄti
buddhiḥ sÄ pÄrtha rÄjasÄ«

yaya--by which; dharmam--principles of religion; adharmam--and irreligion; ca--and; karyam--work; ca--also; akaryam--what ought not to be done; eva--certainly; ca--also; ayatha-vat--not perfectly; prajanati--knows; buddhih--intelligence; sa--that; partha--O son of Prtha; rajasi--in the mode of passion.


Text

And that understanding which cannot distinguish between the religious way of life and the irreligious, between action that should be done and action that should not be done, that imperfect understanding, O son of Prtha, is in the mode of passion.

Purport
Intelligence in the mode of passion is always working perversely. It accepts religions which are not actually religions and rejects actual religion. All views and activities are misguided. Men of passionate intelligence understand a great soul to be a common man and accept a common man as a great soul. They think truth to be untruth and accept untruth as truth. In all activities they simply take the wrong path; therefore their intelligence is in the mode of passion.