大方廣佛華嚴經隨疏演義鈔 64.17

64.17

疏「又既不二亦不壞有無」下，第二明不壞有無，以成俱句遣俱非也。上二句標。從「則不異無之有是不有之有」下，二顯相，此句將不二立有。次云「不異有之無是不無之無」者，將不異立無也。是為由不二故不壞，不壞則空有雙存，結云「則遣俱非」。

Regarding the commentary's "furthermore, since they are non-dual, it also does not destroy existence and non-existence" onward: this is the second, explaining that not destroying existence and non-existence accomplishes the clause of both and eliminates the clause of neither. The two lines above indicate it. From "then the existence not different from non-existence is the existence of non-existence" onward, second, it reveals the characteristics; this clause establishes existence by means of non-duality. Next, it says: "The non-existence not different from existence is the non-existence of non-non-existence": this establishes non-existence by means of non-difference. It is because of non-duality that there is no destruction; having no destruction, both emptiness and existence are preserved; hence it concludes, "thus eliminating neither."