成唯識論述記 8.558

8.558

述曰：增上緣定有，此中更不說，無明望行，愛望於取，生望老死，此之三支有餘二緣，謂等無間及所緣緣，行望識乃至觸望受，取望有，無等無間者，其果皆非現心、心所相引生故，非所緣緣者，皆非現行心能緣慮故。

The Commentary states: The dominant condition is definitely present, so it is not mentioned again here. Between ignorance and volitional formations, between craving and grasping, and between birth and old age and death, these three [pairs of] links possess the remaining two conditions, namely, the immediately preceding condition and the objective condition. From volitional formations in relation to consciousness, up to contact in relation to feeling, and grasping in relation to existence, they lack the immediately preceding condition because their results are not induced by active mind and mental factors; they are not objective conditions because none of them can be cognised by an active mind.