維摩經玄疏 1.20

1.20

所以然者，初題人名，名總三義，故名為總；今欲分別教門，應須分別體、宗、用之異，故名為別。人是別總，三義是總別，是則總總於別，別別於總也。所以然者，人名淨、無垢、稱。「淨」即真性，真性清淨即是體也；「無垢」即實慧，實慧因果即是經宗；「稱」即方便巧能，即是經用。引而申之，故謂之別也。教相者，既通明諸經同異，故義兼總別。

Why is this? First, the person's name in the title: the name subsumes the three meanings, and is therefore called general. Now, wishing to differentiate the portals of teaching, one must differentiate the distinctions among substance, central theme, and function, and it is therefore called specific. The person is the specific-general, and the three meanings are the general-specific; thus the general generalizes the specific, and the specific specifies the general. Why is this? The person's name is 'Clean' (jing), 'Spotless' (wugou), and 'Renown' (cheng). 'Clean' is the true nature, and the purity of the true nature is the substance; 'Spotless' is the real wisdom, and the cause and effect of real wisdom is the sūtra's central theme; 'Renown' is the skillful facility of expedient means, which is the sūtra's function. Extending and developing this, it is therefore called specific. As for the characteristics of the teaching, since it broadly clarifies the similarities and differences among the sūtras, its meaning combines both the general and the specific.