大方廣佛華嚴經隨疏演義鈔 73.19

73.19

疏「又十地有三」者，第二修顯分別。以修成法三而收四喻。前二是修，故亦是教。次一是成，亦順於證。三是法地，順佛果海，故以海喻融前二也。前二即是修成，含池、山、珠之三喻也。

Regarding the Commentary's statement, "Furthermore, the ten grounds have three": this is the second, the differentiation in terms of cultivation and manifestation. By means of the three—cultivation, fulfillment, and reality—it subsumes the four similes. The first two are cultivation, hence they are also teaching. The next one is fulfillment, which also accords with realization. The third is the ground of reality, according with the ocean of the Buddha's fruit; thus it uses the ocean simile to fuse the former two. The former two are cultivation and fulfillment, which contain the three similes of the pond, mountain, and jewel.