तत्त्वमस्यादिवाक्योत्थं यज्जीवपरमात्मनोः ।तादात्म्यविषयं ज्ञानं तदिदं मुक्तिसाधनम् ॥ ६ ॥
In plain words
The knowledge that rises out of sentences like "You are That" — knowledge whose entire content is the identity of the individual self and the supreme Self — that, precisely this, is what frees you.
Close to the Sanskrit
That knowledge which has arisen from the sentence 'That thou art' and the rest, and which has as its object the identity of the individual self and the supreme Self — that, this, is the means of liberation.