俱舍論頌疏論本 6.51

6.51

釋曰：後因者，謂異熟因，於六因中最後說故，初異熟果此因所得。言前因者，謂能作因，於六因中最初說故，後增上果此因所得。由能作因有增上力，所引得果名為增上。增上之果，依主釋也。謂能作因於法不障，得增上名。或能作因亦有勝力，如十處界於五識身，諸有情業於器世間。言十處者，五根、五境親生五識也。又耳等根對於眼識生等，亦有展轉增上生力，聞已便生欣見欲故。謂因耳聞便欣見色，遂發眼識，是則耳根有增上力，能生眼識也。

Explanation: 'The last cause' refers to the ripening cause (vipāka-hetu), because it is stated last among the six causes; the first result, that of ripening, is obtained from this cause. 'The first cause' refers to the efficient cause (kāraṇa-hetu), because it is stated first among the six causes; the later result, that of predominance, is obtained from this cause. Because the efficient cause possesses predominant power, the result induced and obtained is called 'predominant'. The result of predominance is a dependent compound (tatpuruṣa). That is, the efficient cause does not obstruct dharmas, hence it receives the name 'predominant'. Alternatively, the efficient cause also possesses superior power, just as the ten bases and elements do regarding the five bodies of consciousness, and the karma of sentient beings does regarding the receptacle world. The 'ten bases' refer to the five faculties and five sense-objects directly producing the five consciousnesses. Furthermore, faculties such as the ear also have mutually predominant power to produce eye-consciousness, etc., because upon hearing, one then gives rise to the desire to see with pleasure. That is, hearing with the ear gives rise to the delight of seeing forms, whereupon eye-consciousness is produced; thus the ear faculty has predominant power and can produce eye-consciousness.