That understanding which cannot distinguish between the religious way of life & the irreligious, between action that should be done & action that should not be done, that imperfect understanding, O son of Prtha, is in the mode of passion. BG 18.31 - 1972

Expressions researched:
"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 Pṛthā, is in the mode of passion"

Bhagavad-gita As it is

BG Chapters 13 - 18

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 Pṛthā, is in the mode of passion.

BG 18.31 (1972), Translation and Purport

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 Pṛthā, is in the mode of passion.

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.