瑜伽論記 5.199

5.199

Regarding "having sought and having discerned": this is because initial discernment is different. Regarding "in this way, toward the external ... contemplating forms is also thus": this explains that the stages of hearing and thinking are patterned after the calming and insight induced within concentration; whether knowing or seeing, toward that form there is also initial seeking and subsequent discernment. This additionally clarifies the distinguishing of causes of liberation, etc., in other schools: according to the Sarvāstivādins, the eight liberations are exclusively causes.