瑜伽論記 11.356

11.356

四無礙解及則於彼無倒引發正加行智等者，四無礙解正是能解深義智性，則四無礙解前方便智名加行智也。

Regarding the "four unhindered knowledges and the wisdom of correct preparatory application that accurately initiates them," and so forth: the four unhindered knowledges are precisely the nature of wisdom capable of understanding profound meanings, and the preparatory wisdom preceding the four unhindered knowledges is called preparatory application wisdom.