Bhagavad Gita Chapter 3, Verse 40

इन्द्रियाणि मनो बुद्धिरस्याधिष्ठानमुच्यते | एतैर्विमोहयत्येष ज्ञानमावृत्य देहिनम् ||

indriyāṇi mano buddhir asyādhiṣṭhānam ucyate etair vimohayaty eṣa jñānam āvṛtya dehinam

The senses, the mind, and the intellect are said to be its seat. Through these, desire deludes the embodied being by covering wisdom.

After revealing desire's insatiable nature, Krishna pinpoints where it operates. 'Indriyāṇi mano buddhir asyādhiṣṭhānam'—the senses, mind, and intellect are its seats (adhiṣṭhānam). Three levels: physical cravings (indriyāṇi), emotional neediness for validation and approval (manaḥ), and intellectual attachment to being right (buddhiḥ). Most people recognize sensory desires but miss the subtler mental and intellectual ones. 'Etair vimohayaty eṣa jñānam āvṛtya'—through these three, desire covers (āvṛtya) your wisdom, leaving you deluded even when you know better.