Bhagwad Gita
Chapter 18, Verse 20
सर्वभूतेषु येनैकं भावमव्ययमीक्षते।अविभक्तं विभक्तेषु तज्ज्ञानं विद्धि सात्त्विकम्।।18.20।।
That knowledge by which one undivided spiritual nature is seen in all existences, undivided in the divided, is knowledge in the mode of goodness.