華嚴經探玄記 6.85

6.85

First, differentiating their essential nature: they take the three dharmas—the pure dharmadhātu, fundamental wisdom, and subsequent wisdom—as their essence, as can be seen in the text. Alternatively, collectively they take only object and wisdom as their nature; furthermore, with object and wisdom mutually fused, they take solely the one dharmadhātu as their nature.