妙法蓮華經玄贊 8.114

8.114

贊曰：此有四德。一解二空，即空觀有故；二得四辨，住善慧地故；三常審宣說，順所證故、離所詮故；四無疑惑，理、事二疑並已盡故。

The Eulogy states: Here there are four virtues: (1) understanding the two emptinesses, which is because through the contemplation of emptiness one perceives existence; (2) obtaining the four unimpeded eloquences, because he abides in the stage of good wisdom; (3) constantly and thoroughly proclaiming, because it conforms with what is realized and is free from what is expressed; (4) being free from doubt, because the two doubts of principle and phenomena have both been exhausted.