大方廣佛華嚴經隨疏演義鈔 13.32

13.32

疏「前中通論」下，第二依章別釋。於中二：先釋通宗、後釋別宗。前中三：初總標大意、二敘昔辯違、三申今正解。今初。言「諸部異計」，即二十部。言「十八本二」者，十八部名，次下當列。本二者，即上座部及大眾部。故《文殊問經》云「十八及本二，皆從大乘出。無是亦無非，我說未來起。」「以義相從」者，合二十部，兼諸大乘為十宗故。

In the Commentary, from "In the first, to discuss generally" onward, is the second: distinct explanation following the sections. Herein there are two: first, explaining the shared doctrine; second, explaining the distinct doctrines. In the first there are three: first, generally indicating the main meaning; second, recounting earlier views and discerning contradictions; third, presenting the present correct understanding. Now, the first. The words "different tenets of the various schools" refer to the twenty schools. As for the words "the eighteen and the root two," the names of the eighteen schools will be listed directly below. The root two are the Sthaviravāda and the Mahāsāṃghika schools. Therefore, the Mañjuśrīparipṛcchā-sūtra states: "The eighteen and the root two / all come forth from the Mahāyāna. / There is neither right nor wrong; / I declare they will arise in the future." As for "categorised together in accordance with their doctrinal meaning," this is because it combines the twenty schools together with the various Mahāyāna [teachings] into ten doctrines.