成唯識論述記 3.287

3.287

述曰：彼說自他阿賴耶識各自變為根，非自變他根，一則無用，不變他根；二由彼論不定說言自身本識變他根故，不可為證。又色界化生，根無處可無，欲界不爾。又彼色界不變根者，依處便醜，如木人鼻舌，由善業殊勝，所感依處，極甚光淨，故要假根相扶，依處方好，此則不爾，故不為例。若爾，欲界亦有感得他殊妙身而受用之，何不變根扶助依處，令其光潔？此理不然，色界諸根自識所變，令則變他，何以為例？又彼色界只是無識，識若依根，根則有用。今欲界者，若變為根，殊無實用，非自他識之所依故，殊不相例，是義應思。何以得知變他依處？

The Commentary states: That [treatise] says that the ālayavijñānas of oneself and another each manifest as indriyas on their own, not that one's own manifests another's indriyas. For one thing, they are useless, so one does not manifest another's indriyas; secondly, because that treatise does not definitively say that one's own fundamental consciousness manifests another's indriyas, it cannot be used as proof. Furthermore, in the form realm's apparitional birth, there is no indriya where the physical support could be absent, whereas in the desire realm this is not the case. Again, if one did not manifest the indriyas in that form realm, the physical support would be ugly, like the wooden person's nose and tongue; because of the excellence of wholesome karma, the physical support induced is extremely luminous and pure, so it must rely on the mutual support of the indriya for the physical support to be fine; this is not the case here, so it cannot serve as an analogy. If so, since in the desire realm one also induces and enjoys another's wonderfully exquisite body, why not manifest the indriyas to support the physical support and make it luminous and clean? This reasoning is incorrect: the various indriyas of the form realm are manifested by one's own consciousness, whereas here it would be manifesting another's; how could that serve as an analogy? Moreover, in that form realm, there is merely the absence of [sensory] consciousness; if consciousness were to rely on the indriya, the indriya would be functional. Here in the desire realm, if it were manifested as an indriya, it would completely lack real practical function, because it does not serve as a basis for one's own or another's consciousness; they are entirely non-analogous. This meaning should be deliberated upon. How does one know that it manifests another's physical support?