因明入正理論疏 3.10

3.10

問：「相違有四，何故初說法自相因？」答：「正所諍故。上比量相違，相違決定，皆唯說彼法自相故，從彼初說。此有二師，如聲生論立聲常宗，所作性因，聲顯論立勤勇無間所發性因。」

Question: "There are four contradictions; why state first the reason [contradicting] the own-nature of the property?" Answer: "Because it is what is directly in dispute. In the inference-contradiction (anumāna-bādha) and the inconclusive through contradiction (viruddhāvyabhicārin) above, both state only that own-nature of the property; hence it is stated first following them. Here there are two masters: as when the Śabdakāryavāda establishes the thesis that sound is permanent with the reason 'because of being produced', and the Śabdābhivyaktivāda establishes it with the reason 'because of arising immediately after an effort'."