三彌勒經疏 1.14

1.14

問：諸說法本願除我執，何故不稱無我聞？答：四義但稱我所聞。一云言說易故，謂若言無我，不解表誰故。二順世間故，謂如來言說無非，眾生共立量故。三除無我怖，謂若言無我者，為誰修學故。四有自他染淨因果事業故，若言無我即不能表此差別故。

Question: The original intent of all preaching of the Dharma is to eliminate grasping to a self. Why does one not say 'Without a self have [I] heard'? Answer: There are four reasons for only stating 'what I have heard'. First, because it makes speech easy: if one said 'without a self', it would not be understood whom it indicates. Second, to conform to the world: the Tathāgata's speech is not incorrect, because sentient beings collectively establish valid conventions. Third, to eliminate fear of selflessness: if one said 'without a self', for whose sake would one cultivate and learn? Fourth, because there are defiled and pure causes, effects, and actions of oneself and others: if one said 'without a self', one could not express these distinctions.