सर्वभूतेषु येनैकं भावमव्ययमीक्षते।
अविभक्तं विभक्तेषु तज्ज्ञानं विद्धि सात्त्विकम्।।18.20।।
18.20. That instrument-of-knowledge, by means of which one perceives in all beings the singular immutable Existence, the Unclassified in the classified ones - that you must know to be born of the Sattva (Strand).
18.20 See Comment under 18.22
Sarvabhooteshu yenaikam bhaavamavyayameekshate; Avibhaktam vibhakteshu tajjnaanam viddhi saattwikam.
sarva-bhūteṣhu—within all living beings; yena—by which; ekam—one; bhāvam—nature; avyayam—imperishable; īkṣhate—one sees; avibhaktam—undivided; vibhakteṣhu—in diversity; tat—that; jñānam—knowledge; viddhi—understand; sāttvikam—in the mode of goodness