Bhagwad Gita
Chapter 18, Verse 31
यया धर्ममधर्मं च कार्यं चाकार्यमेव च।अयथावत्प्रजानाति बुद्धिः सा पार्थ राजसी।।18.31।।
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.