妙法蓮華經玄贊 2.342

2.342

贊曰：此誡勸所化，精進為出世之根，放逸為生死之本，理須修斷，況乎諸佛億劫方遇，今既得遇而不修斷者哉！故經云諸佛出現樂、演說正法樂、僧眾和合樂，同修勇進樂。

The Commentary says: This admonishes and encourages those to be converted. Vigor is the root of world-transcendence; negligence is the basis of saṃsāra. By principle one must cultivate [the former] and sever [the latter]; how much more so when buddhas are encountered only after koṭis of kalpas! Now that one has met one, how could one fail to cultivate and sever? Therefore the sūtra says: the joy of the appearance of buddhas, the joy of expounding the true Dharma, the joy of the harmony of the saṃgha, and the joy of cultivating courageous vigor together.