成唯識論了義燈 1.118

1.118

性種等隨應者，通釋前三句。謂前三句中，隨其所應判，性、種等不可一例。有性、界隨，心種不隨。有性、種隨，心界不隨。有界、種隨，心性不隨。有三俱隨，有俱不隨。且如第八緣天眼、耳，性隨，種、界俱不隨。問：五、六無記，緣五塵境，得自相時，性不隨心。云何第八性隨心耶？答：八本餘末。又五、六識，體通三性，八識因位，唯無記故。如因七緣八，性同不同，通情、本故。界同種不同，如斯等類，思之可悉。又七緣八，以相從質，是無覆。不得從八，是異熟，故云隨應。又作四句分別，有性境不隨心，亦獨影唯從見者，謂第六散意與五同緣，即於此時緣菟角等，及第八識心王，性境不隨心，心所獨影唯從見，相分是假，無別種故。

'Nature, seed, and so forth conform according to what is appropriate' comprehensively explains the preceding three lines. This means that among the preceding three lines, judging according to what is appropriate, nature, seed, and so forth cannot be treated uniformly. There are cases where nature and realm conform [to the mind], while the seed does not conform. There are cases where nature and seed conform [to the mind], while the realm does not conform. There are cases where realm and seed conform [to the mind], while the nature does not conform. There are cases where all three conform, and cases where none conform. For instance, when the eighth [consciousness] apprehends the divine eye and ear, the nature conforms, while seed and realm both do not conform. Question: When the indeterminate fifth and sixth [consciousnesses] apprehend the spheres of the five sense-objects and attain the self-characteristic, their nature does not conform to the mind. Why then does the nature of the eighth conform to the mind? Answer: The eighth is the root, the rest are the branches. Furthermore, the essence of the fifth and sixth consciousnesses pervades the three natures, whereas the eighth consciousness in the causal stage is solely indeterminate. As when the causal seventh apprehends the eighth, the nature is the same or not the same, communicating to subjective consciousness and underlying basis; the realm is the same while the seed is not the same—such cases as these can be known through reflection. Furthermore, when the seventh apprehends the eighth, subsuming the image to conform to the underlying substance, it is unobstructed; it cannot conform to the eighth in being ripened; hence it is said, 'conform according to what is appropriate.' Furthermore, making a fourfold distinction, there is that which is a nature-sphere that does not conform to the mind, and also a solitary shadow that solely conforms to the seeing: namely, when the sixth scattered mind apprehends concurrently with the five, and right at this time apprehends hare's horns and so forth, as well as the eighth consciousness mind-king, the nature-sphere does not conform to the mind, whereas the mental factors are solitary shadows that solely conform to the seeing, their image-parts being provisional and lacking distinct seeds.