सर्वभूतेषु येनैकं भावमव्ययमीक्षते।
अविभक्तं विभक्तेषु तज्ज्ञानं विद्धि सात्त्विकम्।।18.20।।
18.20 Know that knowledge to be originating from sattva through which one sees a single, undecaying, undivided Entity in all the diversified things.
18.20 The self (Atman), which is of the form of knowledge, is alike and uniform, though distinct, in all beings, even though they may externally, and from the point of view of duty, be distinguished as Brahmanas, Ksatriyas, householders, celibates, fair, tall etc. The immutable selves in all these perishing forms or bodies are unaffected by the fruits of actions. Such knowledge of the immutability of the self in all changing beings, is Sattvika.
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