觀無量壽佛經疏 1.14

1.14

第三地觀。文有四：一漸想觀。從「若得三昧」下，第二實觀。「佛告」下，明利益。「作是觀」下，顯觀邪正。前水是想，不能滅罪。地觀是實，故能除斷也。

Third is the contemplation of the ground. The text has four [parts]: first, gradual imaginative contemplation; from "If one attains samādhi" onwards, second, the actual contemplation; from "The Buddha addressed..." onwards, explaining the benefits; from "To perform this contemplation..." onwards, revealing the incorrectness or correctness of the contemplation. The preceding water is an imaginative visualization, unable to eradicate sins; the contemplation of the ground is the actual, and therefore it is able to eliminate and sever them.