成唯識論述記 8.117

8.117

述曰：今釋彼文，為不盡理。若准方便攝餘因盡，有非增上者，以等無間及所緣緣，是方便攝故，以增上緣攝因多故，謂除觀待、同事、不相違少分，餘皆增上。偏說方便是增上緣，此約不相亂增上緣體解。若相亂體，以餘二緣亦增上故，皆方便攝。若不爾者，不說能生是增上故，顯方便中具三緣也。

The Commentary states: Now we explain that text as not fully expressing the underlying principle. If according to auxiliary means subsuming the remaining causes completely, there are those that are not dominant [conditions], this is because the immediately preceding condition and the objective condition are subsumed under auxiliary means. Because the dominant condition subsumes many causes—that is, setting aside minor parts of dependency, concurrent action, and non-contradiction, all the rest are dominant—it is specifically said that the auxiliary [cause] is the dominant condition. This is explained in terms of the distinct, unconfused essence of the dominant condition. If in terms of overlapping essences, since the other two conditions are also dominant, all are subsumed under auxiliary means. If this were not so, it would not say that the productive [cause] is not dominant, thus revealing that auxiliary means possesses all three conditions.