摩訶止觀 5.146

5.146

又善男子！心若在定，能知世間生滅法相，亦知出世不生不滅法相。如來成道猶尚樂定，況諸凡夫？有禪定者，如夜見電光，即得見道，破無數億洞然之惡，乃至得成一切種智。善巧方便，種種緣喻，廣讚於止，即會真如。是名「隨第一義以止安心」也。

“Furthermore, good man! If the mind abides in concentration, it can know the characteristics of arising and ceasing phenomena in the world, and it can also know the characteristics of unarisen and unceasing phenomena beyond the world. Even when the Tathāgata attained awakening, he still delighted in concentration, how much more so ordinary worldlings? One who has dhyāna-concentration is like someone seeing lightning at night: he immediately gains insight into the Path, shatters innumerable billions of blazing evils, and goes on to accomplish sarvākārajñatā.” With skillful means and various causes and parables, one extensively praises calming, directly according with suchness. This is called “calming the mind by pacifying it in accordance with the supreme truth.”