無量壽經連義述文贊 2.6

2.6

經曰「其所修行清淨無穢」者，述云：第二、就實以歎二利。有二：初、略歎；後、廣讚。初又有二：此初、別歎。又有四：初、歎自行淨也。

The sūtra says: "Their practices were pure and undefiled." The commentary states: Second, praising the two benefits in terms of reality. There are two: first, brief praise; later, extensive praise. The first again has two: this initial part is specific praise. It further has four: first, praising the purity of their own practice.