法華論疏 3.293

3.293

不即眾生界，釋上無有在世。不離眾生界，釋上及無滅度者。亦得云如來藏不在世間，故不即眾生界；如來藏無有滅度，不離眾生界。故經論得反覆相釋也。又於理未始二，故不離眾生界。於緣未始一，故不即眾生界也。亦是六道常法身故不離法身，於緣成六道故不即。

"Not identical with the realm of sentient beings" explains "there is no being in the world" above. "Not separate from the realm of sentient beings" explains "nor is there passing into extinction" above. One may also say: because the tathāgatagarbha is not in the world, it is not identical with the realm of sentient beings; because the tathāgatagarbha has no extinction, it is not separate from the realm of sentient beings. Thus, sūtra and treatise can mutually explain each other in reverse. Furthermore, in terms of principle, there was never duality, so it is not separate from the realm of sentient beings; in terms of conditions, there was never oneness, so it is not identical with the realm of sentient beings. It is also that the six destinies are constantly the dharmakāya, so they are not separate from the dharmakāya; yet through conditions they form the six destinies, so they are not identical.