大乘起信論略述 2.236

2.236

論。如修多羅至終無有退　述曰。下引經證。於中有三。初顯得往生。後顯住正定。此初也。然生淨土有其願行。若人專念西方等者。此顯行也。所修善根願求等者。此明願也。即得往生常見等者。顯由行願得往生也。

[Treatise:] "As the sūtra says […] ultimately there will be no regression." / [Exposition:] The following cites sūtra evidence. There are three parts here: first, showing attainment of rebirth; later, showing abiding in correct determination. This is the first. Rebirth in a pure land has its vows and practices. "If a person single-mindedly contemplates the Western [direction]," etc., shows the practice. "The roots of goodness cultivated being dedicated in vows to seek," etc., explains the vows. "They will then attain rebirth, constantly see [the Buddha]," etc., shows the attainment of rebirth through practice and vows.