妙法蓮華經玄義 1.231

1.231

彼作因果六種以判麁妙，又以四一專判妙。今難其麁皆備四一，則昔麁非麁；難其妙全無四一，則今妙非妙。於其一句，設四句難，四六二十四耳。用彼矛盾，自相擊故，不盈不縮，應爾許耳。

He established six aspects of cause and fruit to judge coarseness and subtlety, and also exclusively judged subtlety by means of the four onenesses. Now I challenge him: the past coarse was fully equipped with the four onenesses, so the past coarseness was not coarse; the present subtle completely lacked the four onenesses, so the present subtlety was not subtle. Against his single phrase, I set forth four lines of challenge, four times six making twenty-four. Using his own contradictions to strike against each other, neither exceeding nor falling short, there should be just this many.