宗鏡錄 90.2

90.2

夫如上所說。涅槃非有。故經云。設有一法過涅槃者。我亦說如幻如夢。即後學之人。徒勞景慕。

[Question:] As stated above, nirvāṇa does not exist. Therefore a sūtra states: "Even if there were a dharma surpassing nirvāṇa, I would still say it is like an illusion, like a dream." In that case, later students vainly labor in admiring it.