瑜伽論記 4.352

4.352

或為修習諸無礙解者，其無礙解名分別慧，依四靜慮等修此方便定，是此修定體，通有漏及無漏。

Regarding "or for the sake of cultivating the unobstructed knowledges": those unobstructed knowledges are called discriminative wisdom; cultivating this preparatory concentration based on the four dhyānas and so forth constitutes the essential nature of this cultivation of concentration, which includes both tainted and taintless.