法華論疏 2.257

2.257

如來藏者，在煩惱之內名如來藏，亦名如來胎。法身之體不變義故者，雖在煩惱，不為煩惱所染，故名不變。《佛性論》虛妄法有三變異，釋無變異義。一果報盡故變異、二對治所破故變異、三念念滅故變異。法身離此三過失。一前後寂靜故，無果報盡變異；二無漏故，無對治破變異；三非有為故，無念念壞變異。

As for 'tathāgatagarbha,' when inside afflictions it is called tathāgatagarbha, and also called the womb of the Tathāgata. As for 'the unchangeable sense of the substance of the dharmakāya,' although it is within afflictions, it is not defiled by afflictions, hence called 'unchangeable.' The *Foxing lun* mentions three alterations of false dharmas to explain the meaning of being without alteration: first, alteration due to the exhaustion of retributions; second, alteration due to being broken by antidotes; third, alteration due to moment-by-moment cessation. The dharmakāya is free from these three faults: first, because it is tranquil before and after, there is no alteration due to the exhaustion of retributions; second, because it is undefiled, there is no alteration due to being broken by antidotes; third, because it is unconditioned, there is no alteration due to moment-by-moment destruction.