無量壽經優婆提舍願生偈註 2.28

2.28

觀察體相者，此分中有二體：一者器體、二者眾生體。器分中又有三重：一者國土體相、二者示現自利利他、三者入第一義諦。

As for the essence and characteristics of contemplation: in this section there are two essences: first, the essence of the container; second, the essence of sentient beings. Within the container section, there are again three layers: first, the essence and characteristics of the land; second, demonstrating self-benefit and benefiting others; third, entering the ultimate truth.