成唯識論了義燈 7.302

7.302

The Yaoji says: "Two interpretations have been transmitted. One says that the essence of the svābhāvika-dharmakāya is motionless and permanent, while the saṃbhogakāya and nirmāṇakāya are both impermanent. Another says that all three bodies are motionless and permanent, and that speaking of them as impermanent is said in terms of their manifested appearances. Both traditions broadly establish this with reasoning." It later concludes: "Both of the two interpretations above are reasonable."