妙法蓮華經玄贊 2.256

2.256

贊曰：行出塵中也。既發大心恒勤持戒，能宣妙理皆為法師。發心者住定，梵行者持戒，法師者具慧，三藏備矣。

The commentary says: This is their practice transcending the dust of the world. Having generated the great resolve, constantly and diligently upholding the precepts, and capable of proclaiming the wondrous truth, they all became Dharma masters. Generating the resolve corresponds to abiding in samādhi; the brahma-practice corresponds to upholding precepts; being a Dharma master corresponds to possessing wisdom: the three trainings are fully prepared.