俱舍論記 10.89

10.89

「有說觸後至緣觸生受」者，經部中上坐解。觸前為因，後受果生。如第一剎那根、境為先，第二剎那次有識起。識起之時必依根緣境，此三和合即名為觸，無有別體。或前根、境及與後識，此三和合假名為觸。第三剎那以前念觸因為緣，生此念受果。

Regarding "Some say: after contact … conditioned by contact, feeling arises": the Elder within the Sautrāntika explains. Contact is the prior cause, and afterwards the effect of feeling arises. For example, in the first moment, sense faculty and object are prior, and in the second moment consciousness then arises. When consciousness arises, it must rely on the sense faculty and take the object as condition; the combination of these three is nominally called contact, having no distinct entity. Or, the prior sense faculty and object together with the subsequent consciousness—the combination of these three is conventionally designated as contact. In the third moment, taking the contact-cause of the prior moment as condition, the feeling-effect of this moment arises.