無量壽經優婆提舍願生偈註 2.114

2.114

上三句雖言遍至，皆是有佛國土。若無此句，便是法身有所不法、上善有所不善。觀行體相竟。已下是解義中第四重，名為淨入願心。

Although the preceding three lines speak of universally reaching [all places], these are all Buddha lands. If this line were absent, it would mean that the Dharma body fails to conform to Dharma somewhere, and that supreme goodness fails to be good somewhere. The contemplation of the essence and marks of practice is concluded. Below is the fourth level in explaining the meaning, entitled 'pure entry into the vow-mind.'