大乘入道次第開決 1.159

1.159

能為三慧作助伴者。由前八種所有善法。能與聞慧而為助伴。第九思惟所有善法。能與思慧而為助伴。第十修習所有善品。能與修慧而為助伴。於其三聚諸善法中。由念思定力最勝故。而名思惟及修習等。

Regarding 'Being able to serve as companions to the three wisdoms': The wholesome dharmas of the preceding eight kinds can serve as companions to the wisdom derived from hearing. The wholesome dharmas of the ninth, reflection, can serve as companions to the wisdom derived from reflection. All the wholesome items of the tenth, cultivation, can serve as companions to the wisdom derived from cultivation. Among all the wholesome dharmas of these three aggregates, because the power of mindfulness, reflection, and concentration is most supreme, they are termed reflection, cultivation, and so on.