金光明經文句記 3.64

3.64

First, explaining Ruciraketu's understanding based on what was heard. 'Fundamental and trace' means that the substance is fundamental and the function is trace. Hearing of the immeasurable lifespan, he understood that the trace function can be permanent, a length that is not long; he also knew that the trace function can be short, a shortness that is not short. His fixed doubt concerning eighty [years] departed from this point. 'Deep mind' means awakening to the lofty and deep substance of the retribution Dharma. This fundamental substance is wondrously beyond both measure and immeasurability.