大方廣佛華嚴經隨疏演義鈔 32.19

32.19

疏「故二相成」下，第三結歸中道，略有三重。上非即非離為中道，由此故成非斷非常、非有非無，亦應言非變非不變也。

Regarding the commentary's statement, "Therefore the two mutually establish each other," thirdly, it concludes by returning to the middle way, which roughly has three tiers. The above "neither identical nor separate" is the middle way, and because of this, "neither annihilation nor permanence" and "neither existence nor non-existence" are established; one should also say "neither changing nor unchanging."