阿彌陀經通贊疏 3.77

3.77

The Praise states: The second reveals its superior benefits. Because of recollecting the Buddha and making the vow, first, there is the unseen assistance of that Buddha, and second, there is the hidden protection of this Buddha; consequently, their aspiration to seek the Path does not retrogress and their determination to be reborn does not turn back; hence it says 'non-retrogression'. If one has already made the vow, one has already attained non-retrogression; if one is now making the vow, one immediately attains non-retrogression in the present; if one will make the vow, one will attain non-retrogression in the future.