維摩經玄疏 6.69

6.69

一、明用四悉檀起有門者，若眾生心樂有法，即用世界悉檀說毘曇有門；若宜聞生善，即用各各為人悉檀說於有門；若執無因緣、邪因緣，或執空取著，起諸結業，即用對治悉檀為說有門；若聞即悟，見第一義，即用第一義悉檀為說有門。如拘隣五人，聞說四諦，即見第一義諦，得須陀洹果。若不能用四悉檀起緣而說者，即是差機說法，是眾生怨，天魔外道，一手作諸勞侶。《涅槃經》云：「說法者，諸佛境界，非諸聲聞、緣覺所知也。」

First, explaining the use of the four siddhāntas to generate the door of existence: if the minds of sentient beings take pleasure in existent dharmas, one uses the worldly siddhānta to speak of the Abhidharma's door of existence; if it is suitable for them to hear [it] so as to generate goodness, one uses the individual siddhānta to speak of the door of existence; if they grasp at causelessness or perverse causes, or grasp at emptiness and form attachments, generating defilements and karma, one uses the therapeutic siddhānta to speak of the door of existence for them; if they awaken upon hearing it and perceive the primary truth, one uses the primary-truth siddhānta to speak of the door of existence for them. As with Kauṇḍinya and the others of the five persons, who upon hearing the preaching of the four truths immediately perceived paramārtha-satya and attained the fruit of stream-enterer. If one cannot use the four siddhāntas to generate conditions and preach, then one preaches the Dharma incongruously with the faculties, being an enemy of sentient beings, a heavenly Māra or non-Buddhist, joining in league with them. The Nirvāṇa Sūtra says: 'Preaching the Dharma is the realm of the buddhas, not what can be known by śrāvakas and pratyekabuddhas.'