Verse 18.32
अधर्मं धर्ममिति या मन्यते तमसावृता । सर्वार्थान्विपरीतांश्च बुद्धिः सा पार्थ तामसी ॥ १८.३२ ॥
हे अर्जुन ! जो तमोगुण से घिरी हुई बुद्भि अधर्म को भी ‘यह धर्म है’ ऐसा मान लेती है तथा इसी प्रकार अन्य सम्पूर्ण पदार्थों को भी विपरीत मान लेती है, वह बुद्भि तामसी है ।
O Arjuna, there is wisdom obscured in darkness and ignorance. A being possesses this TAMAS reasoning if he thinks that wrong is right; if he is always under illusions and misconceptions about truths in this world, and considers religious tasks and devilish tasks to be one and the same.