Bhagavad Gita, Chapter 3, Verse 40

इन्द्रियाणि मनो बुद्धिरस्याधिष्ठानमुच्यते । एतैर्विमोहयत्येष ज्ञानमावृत्य देहिनम्

indriyāṇi mano buddhirasyādhiṣṭhānamucyate | etairvimohayatyeṣa jñānamāvṛtya dehinam

Translation

The senses, mind, and reason are said to be its seat; veiling wisdom through these, it deludes the embodied.

— Alladi Mahadeva Sastri

Word meanings

indriyāṇi
the senses
manaḥ
the mind
buddhiḥ
the reason
asya
of this
adhiṣṭhānam
the seat
ucyate
is called
etaiḥ
by these
vimohayati
bewilders
eṣaḥ
this
jñānam
wisdom
āvṛtya
having enveloped
dehinam
the embodied one

Śaṅkarācārya's commentary

Its seat: the seat of desire. "These": the senses, mind (manas), and reason (buddhi).