請觀音經疏闡義鈔 1.65

1.65

「但有名字」者，謂瓶已破、首已斷，但有瓶、首之名，實無其體。此喻出《大經》。「是字不住」即性空。「亦不不住」即相空。

"Merely having names": meaning that once a jar is broken or a head is severed, there are merely the names of jar and head, but actually no substance. This metaphor comes from the Mahāparinirvāṇa-sūtra. "This character does not abide" is emptiness of nature. "Nor does it not abide" is emptiness of characteristics.