Chapter 5 · The Yoga of Renunciation · Krishna said
Bhagavad Gita 5.9 — Senses act, not the Self
प्रलपन्विसृजन्गृह्णन्नुन्मिषन्निमिषन्नपि। इन्द्रियाणीन्द्रियार्थेषु वर्तन्त इति धारयन् ॥
pralapanvisṛjangṛhṇannunmiṣannimiṣannapi | indriyāṇīndriyārtheṣu vartanta iti dhārayan ||
Meaning
Even while speaking, letting go, grasping, opening and closing the eyes, he holds that it is only the senses moving among their objects.