金光明經文句記 4.210

4.210

三、「是為」下，約人結示。故知今體非獨是體空，須體三諦，方得名為別體。

Third, from "This is..." onward, concluding and pointing out with reference to persons. Thus we know that the present substance is not merely substantive emptiness; one must substantialize the three truths before it can be called the distinct substance.