成唯識論演祕 6.302

6.302

而有兩釋：一云，云何此十因依十五處立；二云此者，此前四緣。既云「如是四緣依十五處」，義有差別，建立十因；云何此緣依處立因？有義斷云：後解為勝，依處差別立緣為因，非離緣外別有因也。十因既然依處亦爾，即開四緣為十五處，非離緣外別有依處，由此義顯開前四緣為十五處，約十五處義有差別。建立四緣以為十因，然開四緣為十五處，義准應爾非此有文。

There are two explanations: The first says, how are these ten causes established based on the fifteen bases? The second says: "these" refers to the preceding four conditions. Since it says, "Such four conditions, based on the fifteen bases, have different meanings and establish the ten causes," how do these conditions, based on the bases, establish the causes? One opinion concludes: The latter explanation is superior: establishing the conditions as causes based on differences in the bases does not mean there are separate causes apart from the conditions. Since the ten causes are so, the bases are also likewise: this simply opens the four conditions into fifteen bases, not that there are separate bases apart from the conditions. By this meaning it is made clear that opening the preceding four conditions into fifteen bases relies on differences in meaning across the fifteen bases. Establishing the four conditions as the ten causes, yet opening the four conditions into fifteen bases, should be inferred according to the meaning; it is not that there is a text here [explicitly stating so].