金光明經文句記 2.211

2.211

初、總明意。然法報應與金光明，皆是法性當體之名，本無優劣。以此經正用金等顯於法性，故佛首唱而為經目，故金光明得為宗源，一切三法便成流派。金解壽量，須約三身，恐作別解，故示復宗。

First, generally explaining the intent. Now, the Dharma, reward, and responsive [bodies], along with "golden light" (suvarṇaprabhāsa), are all names for the intrinsic essence of the Dharma-nature, originally without superiority or inferiority. Because this sūtra specifically uses "gold" and so forth to reveal the Dharma-nature, the Buddha first proclaimed it as the title of the sūtra; thus "golden light" can serve as the principal source, and all threefold dharmas become its streams. Explaining the span of life in terms of gold must rely on the three bodies; fearing that people might form separate interpretations, he therefore shows the return to the principle.