成唯識論演祕 4.337

4.337

有義科云：開導依者至名開導依者辨依義，此但屬心下，示其依體遮簡非依。初辨依義有四義簡，此後心等是第四義，簡自類識後心不為前心作依，無引導故。或雖是心，同時不為心所作依，非開避故。又言此者，此前滅心於後所生心及心所為依故。然為四義將為勝也。

There is an opinion that divides the section as follows: From "The opening-and-guiding condition..." up to "is called an opening-and-guiding condition" explains the meaning of a condition. Below "This belongs only to citta...", it shows the essence of the condition and excludes what is not a condition. The initial explanation of the meaning of a condition has four meanings that exclude: the words "this subsequent mind and so forth" constitute the fourth meaning, excluding the subsequent mind of the same class of consciousness from serving as a condition for the preceding mind, because it lacks the ability to guide. Or, although it is citta, it does not simultaneously serve as a condition for mental factors, because it does not clear the way. Furthermore, regarding the word "this", it is because this preceding ceased mind serves as a condition for the subsequent arising mind and mental factors. Considering it to have four meanings is deemed superior.