Chapter 18 · verse 20 · gita.yoga.org

Bhagavad Gita 18.20

सर्वभूतेषु येनैकं भावमव्ययमीक्षते।अविभक्तं विभक्तेषु तज्ज्ञानं विद्धि सात्त्विकम्

That by which one sees the indestructible Reality in all beings, not separate in any of them—know that knowledge to be Sattvic.