Chapter 18, Verse 32
Part of 18: Mokṣha Sanyās Yog — मोक्षसंन्यासयोगअधर्मं धर्ममिति या मन्यते तमसाऽऽवृता।सर्वार्थान्विपरीतांश्च बुद्धिः सा पार्थ तामसी॥
adharmaṁ dharmam iti yā manyate tamasāvṛitā sarvārthān viparītānśh cha buddhiḥ sā pārtha tāmasī
That intellect, O Arjuna, which is enveloped in darkness and sees Adharma as Dharma and all things perverted, is Tamasic (dark).
That intellect which regards righteous acts as evil, and considers right things to be false, which treats everything in a contrary sense and looks upon virtues as if they were vices and takes everything that the scriptures declare to be good as being entirely wrong, is Tamasic. It views all things in a perverted light. Thus? O Arjuna? I have explained to thee the three aspects of the intellect. Now listen to the explanation of the characteristics of the three aspects of firmness.