觀無量壽佛經疏 4.142

4.142

四、從行此三昧者下，至何況憶念已來，正明比校顯勝勸人奉行。即有其四。一明總標定善以立三昧之名。二明依觀修行即見三身之益。三明重舉能行教之機。四正明比校顯勝，但聞三身之號，尚滅多劫罪愆，何況正念歸依，而不獲證也。

Fourth, the passage from "those who practice this samādhi" down to "how much more so mindfulness" directly clarifies demonstrating superiority by comparison to encourage people to practice; herein there are four points. First, it clarifies generally identifying meditative good to establish the name of samādhi. Second, it clarifies the benefit of seeing the three bodies by cultivating according to contemplation. Third, it clarifies reiterating the capacity capable of practicing the teaching. Fourth, it directly clarifies demonstrating superiority by comparison: merely hearing the names of the three bodies extinguishes the transgressions of many kalpas; how much more so with right mindfulness and refuge could one fail to attain realization?