成唯識論演祕 2.404

2.404

答：有兩釋，一云體一，猶如命根；一云體多，如所依法。後說有憑，前無文也。故《正理論》云：云何異熟？謂趣、生等同分。云何等流？謂種性等。又先業所引是為異熟，現加行起是名等流。若同命根即唯異熟，何有等流？其法同分亦有兩釋，准前可知。

Answer: There are two explanations. One says it is single in substance, like the life-faculty; the other says it is multiple in substance, like the dharmas upon which it relies. The latter explanation has support, whereas the former has no textual authority. Hence the Nyāyānusāra says: 'What is fruition? It refers to the generic similarity of destinies, births, and so forth. What is concordant flow? It refers to lineage, etc.' Furthermore, what is induced by prior karma is fruition; what is produced by present application is concordant flow. If it were like the life-faculty, it would be solely fruition; how could there be concordant flow? The generic similarity of dharmas also has two explanations, which can be understood by analogy with the preceding.