The eighth consciousness is "me" yet lacks the nature of self; the sixth and seventh consciousnesses are not "me" yet possess the nature of self

Original text of the Nirvāṇa Sūtra: 又解脱者，名断一切有为之法，出生一切无漏善法，断塞诸道，所谓若我无我、非我非无我。唯断取著，不断我见。我见者名为佛性，佛性者即真解脱，真解脱者即是如来。

Explanation: The so-called liberation means that all conditioned dharmas of the world have been severed, all untainted wholesome dharmas have been brought forth, and all the passages of conditioned dharmas throughout the three realms of existence have been cut off and blocked. These untainted wholesome dharmas are either self (the eighth consciousness) or non-self (what the sixth and seventh consciousnesses realize), or neither self (the sixth and seventh consciousnesses) nor non-self (the eighth consciousness). "Self" refers, first, to the eighth consciousness, and second, to the sixth and seventh consciousnesses. "Non-self" likewise refers, first, to the eighth consciousness, and second, to the sixth and seventh consciousnesses.

Before enlightenment, the sixth and seventh consciousnesses take "self" as self; after enlightenment, the sixth and seventh consciousnesses are not-self and non-self, and the eighth consciousness is recognized as self. Although the eighth consciousness is recognized as self, the eighth consciousness is also without self—it lacks the self-nature, the master-like nature, the grasping nature, and the nature of ignorance that the sixth and seventh consciousnesses possess.

To summarize: the eighth consciousness is self yet possesses the nature of non-self, while the sixth and seventh consciousnesses are not-self yet possess self-nature. After the sixth and seventh consciousnesses eliminate the view of self, they are without self, knowing that self is not-self; after awakening to the true mind, they gradually take the eighth consciousness as self, and their self-nature gradually diminishes.

In this way, only the grasping attachment to the conditioned dharmas of the five aggregates in the world has been severed, and the view of self has not been eliminated. This view of self refers to one's own true suchness, the Buddha-nature—the nature by which the eighth consciousness becomes a Buddha. This is true liberation, and true liberation is the Tathāgata.