大般涅槃經義記 6.68

6.68

下佛答之，初先正明菩薩無著，「以是緣」下引說證成。前中初言「夫取著者，不名無礙，以為一門」舉失顯得，無所取著乃名無礙，復為一門辯得異失。「是故」以下廣上初門，明著有失。於中，初言「有取著」者，心無無礙。人非菩薩，但名凡夫。

Below, the Buddha answers him: first, he directly clarifies that the bodhisattva has no attachment; from "For this reason" onward, he cites teachings to confirm and establish it. In the former part, his initial statement, "One who has attachment is not called unobstructed; this is considered one gate," cites faults to reveal attainments: having nothing to attach to is what is called unobstructed, which again constitutes a gate distinguishing attainment from fault. From "Therefore" onward, it expands upon the first gate above, clarifying that attachment entails fault. Therein, the initial statement that one who "has attachment" has a mind lacking unobstructedness: the person is not a bodhisattva, but is merely called an ordinary person.