妙法蓮華經玄義 7.37

7.37

又約五味者，乳味則有為十妙明十麁，開十麁顯十妙，則成一權一實；若就四悉檀，則有六權二實；若約四門，則十二權四實也。

Furthermore, in terms of the five flavors: the flavor of milk has the clarification of the ten coarse [teachings] for the sake of the ten subtle ones; opening the ten coarse to reveal the ten subtle forms one provisional and one real. If taken in terms of the four siddhāntas, there are six provisional and two real; if in terms of the four gates, there are twelve provisional and four real.