妙法蓮華經玄義 5.37

5.37

If we take the fourteen prajñās: combining the thirty minds into three prajñās, opening the ten grounds into ten prajñās, and adding equal enlightenment to make fourteen prajñās, these are all causal stages; turning and entering sarvajñā is the fruition stage. This is combining the former and opening the subsequent to clarify the stages of the perfect teaching. If we take the gate of the forty-two syllables, this is opening both the initial and the subsequent to clarify the stages of the perfect teaching. If we take the gods raining down the four flowers, signifying opening, revealing, awakening, and entering, or roaming through the four quarters, these are both combining the initial and the subsequent. The differences in opening and combining across the sūtras are all the skillful means of the siddhāntas, yet the stages of the perfect teaching remain fully evident.