新華嚴經論 3.13

3.13

第一後魏菩提留支立一音教者，謂一切聖教唯是如來一圓音教，但隨根異故種種差殊。如經「一雨所潤」等。經云「佛以一音演說法，眾生隨類各得解。」

First, as for Bodhiruci of the Later Wei establishing the teaching of one sound: it means that all sacred teachings are solely the Tathāgata's single perfect-sound teaching, yet because they accord with differences in faculties, there are various distinctions, as in the sūtra's "moistened by a single rain" and so forth. A sūtra says: "The Buddha expounds the Dharma with a single sound, and sentient beings each obtain understanding according to their kind."