Bhagavad Gita 3.27 Chapter 3, Verse 27

प्रकृतेः क्रियमाणानि गुणैः कर्माणि सर्वशः ।
अहङ्कारविमूढात्मा कर्ताऽहमिति मन्यते ॥३.२७॥

prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ
ahaṅkāravimūḍhātmā kartā'hamiti manyate

Meaning

All actions are performed by the qualities of nature, but one deluded by ego thinks, "I am the doer."

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 3.27 (Chapter 3, The Yoga of Action (Karma Yoga), Verse 27)