Who will get liberated?

Tadbuddayah tath atma nastannishtah tath paraayanaah |

Gachchanthya punaravrutthim Jnananirdhoota kalmashaah || 5.17 ||

"Intellect absorbed in that, their Self being That, established in that, with That for their Supreme Goal, they go whence there is no return, their sins dispelled by Knowledge."

My meaning:

Who is having constant mind, intellect in Brahman/Self, who feels that Brahman is the ultimate and who has cleaned his impurities created by vasanas, through pure wisdom, would get liberated. With the pure knowledge, with the pure awareness, his ego is also dissolved in the Brahman/Self. Knowledge is not just collection of words of book, but an awareness of spiritual divinity, realization of the truth/God/Self. Who is having such knowledge, for him, everything is Brahman. He is liberated.

Commentary by Chinmayananda Swami:

With a deep study of the Reality, the seeker in all his various personal identities, thereafter comes to live in unison with that understanding of the Divinity. His intellect gets, as it were, absorbed in That Knowledge and his mind cannot but sing the song of Godliness through everyone of its emotions. He becomes ever intent upon the Infinite Bliss which he has come to recognise as the essence in him. to such an individual the very Goal is nothing but the Self, which he has understood as illimitable and unlimited.

An individual who has thus educated himself upon the World-of-Truth within himself, shall thereafter, have no reason or chance to get caught up again in this world of likes and dislikes. This is the result of full PARTICIPATION in the studies. The next stage is to live up to what is understood from the studies; the active INVOLVEMENT in spiritual life. Then comes complete COMMITMENT.

How can we say that the ego will not rise again in such a man's bosom? The reason is indicated here, when Krishna qualifies such men as "THOSE WHOSE IMPURITIES HAVE BEEN SHAKEN OFF BY KNOWLEDGE." The impurities mentioned here are the vasanas which are the very materials with which the ego is conjured up. These vasanas together constitute what we philosophically call: "the ignorance of Spiritual Divinity." The antidote for ignorance is Knowledge. Thus, when, with the rise of the Knowledge of Spiritual Bliss, the dreary darkness of ignorance ends, the ego too comes to a total extinction from which it cannot re-start its career. Without a cause no effect is ever possible. In short, in this stanza, we are meeting the most optimistic philosophy in the world, declaring courageously that, Self-Realisation is the final experience in the pilgrimage of evolution, and that, in it, the evolver in us shall come to fulfil himself. God-realisation is the last stage of growth, and thereafter, to be the 'Supreme' is the goal of all evolutionary struggles, to achieve which, the ego, in its self-evolution, roamed about so long in the field of its own self-created world-of-finitude and imperfections!