起信論疏筆削記 8.62

8.62

疏　既是等者，法身之理三乘教中同許不生不滅，是本有之法。既目此法為覺，是可為本。無性下，引證。本覺即法身義也，以此宗中理智無別，謂即理之智名為本覺，即智之理名為法身。如珠即明，無二無別，不同權宗為無為異。

Regarding the commentary's "since it is" and what follows: the principle of the dharmakāya is universally acknowledged across the teachings of the three vehicles as unarisen and unceasing, an inherently existing dharma. Since this dharma is designated as enlightenment, it can indeed be called "original". Regarding "Asaṅga (Wuxing)" and what follows: citing proof. Original enlightenment is precisely the meaning of the dharmakāya. Because in this school principle and wisdom are not distinct—the wisdom that is identical with principle is named original enlightenment, and the principle that is identical with wisdom is named dharmakāya. Just as a gem is identical with its brilliance, they are non-dual and indistinct, unlike the provisional schools that distinguish between the conditioned and the unconditioned.