金光明經文句記 4.25

4.25

初、就理示。攝機用四，此乃通塗。品在圓空，斯為的旨。是故中空，即邊而示。

First, demonstrating in terms of principle. Gathering faculties utilizes the four—this is the general approach. That this chapter rests on Complete emptiness—this is the precise purport. Therefore, the Middle emptiness is demonstrated as being identical with the extremes.