摩訶止觀 4.11

4.11

今用三歸、五戒、二百五十為客戒根本。十種得戒人者，如佛自言：「善來比丘！」自然已得具足戒；如摩訶迦葉，自誓因緣得具足戒；如憍陳如，見諦故受具足戒；如波闍波提比丘尼，以八敬法受具足戒；如達磨提那比丘尼，遣信受具足戒；如須陀耶沙彌，論義受具足戒；如耶舍比丘等，善來受具足戒；如跋陀羅波楞伽加，三歸受具足戒；如邊地，第五律師受具足戒；中國，十人白四羯磨受具足戒。客戒人也。根本淨禪，觀、練、熏、修為客定。四諦慧為客慧，佛出方有也。

Now we take the three refuges, the five precepts, and the two hundred and fifty [precepts] as the root of adventitious precepts. As for the ten kinds of persons who obtain the precepts: as when the Buddha himself said, 'Welcome, monk!' and he naturally obtained the full ordination; as when Mahākāśyapa obtained the full ordination through the condition of his self-sworn vow; as when Ājñātakauṇḍinya received the full ordination by seeing the truths; as when the nun Mahāprajāpatī received the full ordination through the eight weighty rules (guru-dharma); as when the nun Dharmadinnā received the full ordination by sending a messenger; as when the novice Sudaya received the full ordination through doctrinal debate; as when the monk Yaśas and others received the full ordination by [the Buddha's call of] 'Welcome!'; as when Bhadrapāla received the full ordination through the three refuges; as in borderlands, where one receives the full ordination with five vinaya masters; and in the central land, where one receives the full ordination through ten persons with the single motion and three announcements (jñapti-caturtha-karman). These are the persons [receiving] the adventitious precepts. The fundamental pure dhyānas, when contemplated, trained, suffused, and cultivated, are adventitious concentration. The wisdom of the four truths is adventitious wisdom, which exists only when a Buddha appears.