成唯識論演祕 4.666

4.666

由根、識合觀日、月光，如次於根而有損益。又按《俱舍論》第二云：由二因故，從根立號。一、由根是所依性故，境即不爾。二、由所依是不共故，唯自識依。色亦通為他身眼識，及自意識而所取故，餘四准此。由斯不從色等立稱，雖即二義，簡濫亦畢。

Through the conjunction of faculty and consciousness gazing at the light of the sun or moon, the faculty is respectively impaired or benefited. Furthermore, checking the second fascicle of the Abhidharmakośa-bhāṣya, it states: Due to two causes, its designation is established from the faculty. First, because the faculty is of the nature of a basis, whereas the object is not so. Second, because the basis is uncommon, being the basis solely of its own consciousness. Form, on the other hand, is also shared as an object apprehended by the eye-consciousness of another person's body and by one's own mental consciousness. The remaining four [consciousnesses] are understood by analogy with this. For these reasons, the name is not established from form and so forth. Although there are only two meanings, they completely eliminate ambiguity.