摩訶止觀 10.15

10.15

如是見慧從何處出？由禪中有觀支。觀支是慧數，逸觀諸法，莫自知止；快馬著汗，不可控制。若聽講人無禪潤見，始欲分別，多抽腸吐血，因是制命，見終不成。若定力潤觀，雖逸難制，不致抽腸，多得成見。

From where does such view-wisdom emerge? It is because within dhyāna there is the contemplation factor. The contemplation factor is a mental factor of wisdom; it contemplates all phenomena unchecked without knowing when to stop itself, like a swift horse drenched in sweat that cannot be reined in. If people who listen to lectures have no dhyāna to moisten their views, as soon as they wish to discriminate, they often vomit blood from their intestines, thereby terminating their lives, and the view is ultimately not accomplished. If the power of samādhi moistens contemplation, though unchecked and hard to restrain, it does not lead to vomiting blood from the intestines, and often succeeds in forming a view.