The Gateless Gate, by Ekai, called Mu-mon, tr. Nyogen Senzaki and Paul Reps , at sacred-texts.com
Tokusan went to the dining room from the meditation hall holding his bowl. Seppo was on duty cooking. When he met Tokusan he said: "The dinner drum is not yet beaten. Where are you going with your bowl?"
So Tokusan returned to his room.
Seppo told Ganto about this. Ganto said: "Old Tokusan did not understand ultimate truth."
Tokusan heard of this remark and asked Ganto to come to him. "I have heard," he said, "you are not approving my Zen." Ganto admitted this indirectly. Tokusan said nothing.
The next day Tokusan delivered an entirely different kind of lecture to the monks. Ganto laughed and clapped his hands, saying: "I see our old man understands ultimate truth indeed. None in China can surpass him."
Mumon's comment: Speaking about ultimate truth, both Ganto and Tokusan did not even dream it. After all, they are dummies.