妙法蓮華經玄義 9.45

9.45

又自有帶麁能、所，生蘇教是也。不帶麁能、所，乳教是也。自有帶麁所、不帶麁能，熟蘇教是也。自有帶麁能、不帶麁所，圓接通、接別是也，涅槃中諸門亦是也。

Furthermore, there are teachings that carry both a crude facilitating and a crude facilitated, such as the curds teaching. Teachings that carry neither a crude facilitating nor a crude facilitated are the milk teaching. Teachings that carry a crude facilitated but not a crude facilitating are the clarified butter teaching. Teachings that carry a crude facilitating but not a crude facilitated are the perfect teaching connecting the shared, and connecting the distinctive, as are the various gates in the *Nirvāṇa Sūtra*.