大般涅槃經義記 6.82

6.82

上來正辯四無礙竟，下就無礙明得不得。初說無得令人捨著，「如來先為純陀說」下宣說有得使人證入。

The direct explanation of the four unobstructed knowledges is now completed; below, with reference to unobstructedness, it clarifies attainment and non-attainment. First, it teaches non-attainment to make people abandon attachment; from "The Tathāgata previously expounded to Cunda" onward, it proclaims that there is attainment to cause people to realize and enter.