維摩經玄疏 6.33

6.33

二、去取者，俗諦但是凡人所見之理，故非此經體也；真諦即是二乘所見之理，亦非此經體也；中道第一義諦即是法性實相，即此經之正體。

Second, regarding what is rejected and what is accepted: the conventional truth is merely the principle seen by ordinary people, hence it is not the substance of this sūtra; the ultimate truth is precisely the principle seen by the two vehicles, and is also not the substance of this sūtra; the supreme truth of the Middle Way is precisely the true mark of dharma-nature, which is the proper substance of this sūtra.