大般涅槃經義記 6.81

6.81

前中，初先舉其喻事，「如是」已下明實不等，下約顯法。第二句中，初明為凡說拘絺羅無礙第一，「汝問如是」總以結會。第三句中，「或得一」者，四無礙中趣得一種，二亦如是，成前為凡說其第一。具四無礙，成前不及菩薩之義。

In the former part, he first cites an illustrative case; from "Thus" onward, he clarifies that in reality they are not equal; below, he applies it to reveal the doctrine. In the second clause, it first clarifies that for ordinary persons, Koṭṭhita was said to be foremost in unobstructedness; "Your question is thus" summarizes and reconciles it. In the third clause, "may attain one" means that among the four unobstructed knowledges, they merely attain one kind; two are also like this; this establishes the earlier statement that for ordinary persons he was called foremost. Fully possessing the four unobstructed knowledges establishes the earlier meaning of their not equaling the bodhisattva.