BG 18.32
अधर्मं धर्ममिति या मन्यते तमसावृता ।
सर्वार्थान्विपरीतांश्च बुद्धिः सा पार्थ तामसी ॥
सर्वार्थान्विपरीतांश्च बुद्धिः सा पार्थ तामसी ॥
adharmaṁ dharmam iti yā manyate tamasāvṛtā
sarvārthān viparītāṁś ca buddhiḥ sā pārtha tāmasī
sarvārthān viparītāṁś ca buddhiḥ sā pārtha tāmasī
Word-for-word meanings
sā — that; buddhiḥ — intelligence; yā — which; āvṛtā — being covered; tamasā — by ignorance; manyate — conceives; adharmam — unrighteousness; dharmam iti — as righteousness; ca — and; sarva-arthān — all things; viparītān — as contrary [to their real nature]; tāmasī — is tāmasika; pārtha — O son of Pṛthā.
Translation
That intelligence which, being covered by ignorance, conceives unrighteousness as righteousness and all things as contrary to their real nature, is tāmasika, O Arjuna.