因明入正理論疏 1.111

1.111

問：「喻既建成宗，亦能順益，何不名因？」答：「喻謂譬況，正云見邊。令所立義見其邊際，究竟圓滿，故名見邊。雖亦順益，非是正釋宗之所以。親初建立，得此因名，喻疎後成，不得因稱。是故此因不名見邊，說所因時義未成故。至後當知。」

Question: "Since an example also establishes the thesis and can accord and assist, why is it not called a reason?" Answer: "An example means an illustration; correctly speaking, it is called 'seeing the limit' (dṛṣṭānta). It causes the meaning to be established to see its limit, to be completely fulfilled; hence it is called 'seeing the limit'. Although it also accords and assists, it is not the primary explanation of the thesis's rationale. By being the direct, primary establishment, it obtains this name 'reason'; the example establishes it indirectly and subsequently, and does not receive the designation 'reason'. Therefore, this reason is not called 'seeing the limit', because when stating the reason, the meaning is not yet established. This will be understood later."