華嚴經明法品內立三寶章 2.26

2.26

第二、相攝者，有二門：一相即、二相入。此二得成，由二義故：一緣起相由義、二法性融通義。

Second, mutual subsumption comprises two gates: first, mutual identification; second, mutual interpenetration. The establishment of these two is due to two principles: first, the principle of the mutual interdependence of dependent origination; second, the principle of the complete interfusion of the dharma-nature.