因明入正理論疏 2.31

2.31

Question: "Both sound and a jar are impermanent, and whatever is produced is impermanent; the impermanence of sound and the jar are both established. Both sound and a jar are produced, and whatever is impermanent is produced; what prevents the productness of sound and the jar from both being established?" Answer: "The productness of that sound is not impermanence, while the jar is accepted to be produced and also impermanent. Since citing the productness of the jar shows it to be impermanent, by analogy the productness of sound is also impermanent. One does not intend to establish the impermanence of the jar's productness, so how could one separately establish productness by impermanence?"