大方廣佛華嚴經隨疏演義鈔 43.79

43.79

疏「然世法與佛法實無二體」者，同一真如故，無事非真；事亦即如，故云假。約事理以分其二。

Regarding the commentary's “However, worldly phenomena and Buddha-phenomena are truly not of two essences”: because they share the same tathatā, no phenomenon is not real; phenomena are also identical to tathatā, hence they are called conventional. They are divided into two in terms of phenomenon and principle.