佛果圜悟禪師碧巖錄 7.16

7.16

[64] Case: Nanquan later brought up the previous case and asked Zhaozhou. (There must be one mind and one intent; only those on the same path can know.) / Zhaozhou thereupon took off his straw sandals, put them on his head, and walked out. (Inevitably trailing through mud and water.) / Nanquan said, "Had you been there, you would have saved the cat." (Singing and clapping in accord. Those who know the tune are few. Taking error as error.)