遊心安樂道 1.20

1.20

The pure lands spoken of in the above four approaches are all accomplished through the Tathāgata's vows and practices, and are not achieved through the self-power of those reborn there; they are not like the external vessel worlds of defiled lands, which are formed solely by the painful karmic retributions of sentient beings. For this reason, they are generally called pure lands.