華嚴經探玄記 13.33

13.33

四約一切相智分別者，當第四因緣相觀。有支無作故者，明此有支非直後依前故明後無性，亦乃前能作後前亦無作，故諸緣起是種智境界。

Fourth, regarding the differentiation in terms of the knowledge of all aspects: this corresponds to the fourth, the 'contemplation of the characteristics of causes and conditions.' As for 'the links of existence being without agency': it explains that these links of existence are not merely devoid of own-nature in the subsequent depending on the preceding, but also the preceding, being able to produce the subsequent, is itself without agency. Therefore, all dependent origination is the sphere of the knowledge of all aspects.