大方廣佛華嚴經疏 14.19

14.19

二依所依者，地界正由各無自性而得存立。向若有體則不相依，不相依故不得有法，是故攬此無性以成彼法。法合可知。

Second, relying on the support means that the earth element subsists and is established precisely because each lacks self-nature. If formerly they had an essence, then they would not rely on each other; not relying on each other, there could be no dharmas; therefore, gathering this absence of self-nature, those dharmas are constituted. The application to dharmas can be known.