維摩經玄疏 3.70

3.70

第二、約三諦明四教所詮之理者，即為三意：一，明三諦所詮理；二，明能詮四教；三，約經論。

Second, clarifying the principle expressed by the four teachings in reference to the three truths has three points: first, clarifying the principle of the three truths that is expressed; second, clarifying the four teachings that express [it]; third, [matching with] sūtras and treatises.