Bhagwad Gita
Chapter 13, Verse 30
प्रकृत्यैव च कर्माणि क्रियमाणानि सर्वशः।यः पश्यति तथाऽऽत्मानमकर्तारं स पश्यति।।13.30।।
One who can see that all activities are performed by the body, which is created of material nature, and sees that the self does nothing, actually sees.