The Purvapakshin holds that the Jiva or the individual soul which has freed itself from identification with the three bodies attains emancipation after realising Brahman. Release also is a fruit like other fruits, e.g., Svarga or heaven.
Manifestation means as much as origination.
Liberation was not a pre-existent thing. It is something that is newly acquired like heaven, as the word reaches in the text clearly indicates. Therefore emancipation is something new that is acquired by the individual soul. If the manifestation took place only through the self s own nature, it would already appear in the self s former states, because a thing s own nature is never absent in it. The present Sutra refutes this view and says that the word own indicates that emancipation was a pre-existent thing.