成唯識論述記 10.689

10.689

述曰：言淨者，謂從喻顯，如真如性雖本性淨，若不修習，淨無以彰顯，教、理俱得。如珠寶等性雖光潔，若不磨瑩，無以出光故也。如蘇迷盧，雖寶所集，無日輪迴照，何以顯光？此論亦爾，如前第九卷初抄故。

The Commentary states: Regarding the word 'pure': it is revealed through an analogy. Just as although the nature of tathatā is fundamentally pure by nature, without cultivation its purity cannot be made manifest, which applies equally to teaching and principle. It is like precious gems: although their nature is bright and clean, if they are not polished, they have no means to shine forth light. It is also like Mount Sumeru: although it is a collection of precious jewels, without the solar disk turning to shine upon it, how could it manifest light? This treatise is likewise so, as noted in the beginning of the ninth fascicle.