大方廣佛華嚴經隨疏演義鈔 4.7

4.7

疏「初淨穢中」下雙釋。先釋染淨二種四句。前一四句，以本剎末剎相望成四句。華藏為本剎，世尊修因所嚴淨故；剎種所持世界為末剎，應眾生有故。然末剎即狹，本剎則寬。末通淨穢，本剎唯淨。若寬狹相望，自屬通局。今論淨穢故，但取末中染剎。前二句可知。第三句，雙明本末故，得稱「俱」者，不同前二說華藏即不言娑婆、說娑婆即不論華藏，今要明華藏之內娑婆，如一莊嚴城中舉一小室耳。上三皆約事明，第四句唯約理說。若理事相望，則前三句皆末，第四句復為其本故。〈華藏品〉云「華藏世界海，法界等無別，莊嚴極清淨，安住於虛空」等。

Regarding the Commentary's statement from "First, among the pure and defiled..." downwards: explaining both. First, it explains the two sets of four propositions on defilement and purity. In the first set of four propositions, they are formed by contrasting the root kṣetra with the branch kṣetras. The Lotus Treasury is the root kṣetra, because it was adorned and purified by the World-Honoured One's practice of causes; the worlds held by the kṣetra-assemblies are the branch kṣetras, because they exist in response to sentient beings. However, the branch kṣetras are narrow, while the root kṣetra is vast. The branch extends to both the pure and the defiled; the root kṣetra is solely pure. If vast and narrow are compared with each other, they naturally belong to the pervasive and restricted. Now, because purity and defilement are discussed, it merely takes the defiled kṣetras among the branches. The first two propositions can be known. The third proposition clearly explains both root and branch, and thus can be called "both"; unlike the first two, where expounding the Lotus Treasury meant not mentioning Sahā, and expounding Sahā meant not discussing the Lotus Treasury, it now intends to clarify Sahā within the Lotus Treasury, like mentioning a small room within a magnificent city. The above three are all explained in terms of phenomena; the fourth proposition is explained solely in terms of principle. If principle and phenomena are contrasted, then the previous three propositions are all branches, and the fourth proposition is again their root. Therefore, the "Chapter on the Lotus Treasury" says: "The ocean of Lotus Treasury Worlds is equal to and no different from the dharmadhātu, supremely pure in its adornments, abiding firmly in empty space," and so on.