Chapter 18 · Liberation through Renunciation · Krishna said
Bhagavad Gita 18.20 — Sattvic knowledge
सर्वभूतेषु येनैकं भावमव्ययमीक्षते। अविभक्तं विभक्तेषु तज्ज्ञानं विद्धि सात्त्विकम् ॥
sarvabhūteṣu yenaikaṃ bhāvamavyayamīkṣate | avibhaktaṃ vibhakteṣu tajjñānaṃ viddhi sāttvikam ||
Meaning
The knowledge by which one sees one undying reality in all beings, undivided among the divided, is sattvic knowledge.