觀無量壽佛經疏 1.49

1.49

答曰：「如經中說：『但有其行，行即孤亦無所至，但有其願，願即虛亦無所至，要須願行相扶所為皆剋。』是故今此論中直言發願不論有行，是故未即得生與遠生作因者，其義實也。」

Answer: 'As stated in a sūtra: "If there is only practice, practice is isolated and leads nowhere; if there is only a vow, the vow is empty and leads nowhere. It requires vow and practice to support each other for whatever is undertaken to succeed." Therefore, in this treatise it speaks directly of making a vow without speaking of possessing practice; hence, that one does not attain rebirth immediately and that it merely serves as a cause for a distant rebirth is indeed true in its meaning.'