Verse 23

समं स्वरूपममलं ज्ञेयं ब्रह्म परं विदुः ।ज्ञानाभिगममात्रेण तत्स्वयं संप्रसीदति

In plain words

The knowable, they know, is the even, stainless own-nature — the supreme Brahman; merely by the approach of jñāna, that Brahman itself grows serene.