Hekiganroku - Case 26: Hyakujo on Daiyu Peak

A monk asked Hyakujo, 
  "What is the matter of extraordinary wonder?"
Hyakujo said,
  "Sitting alone on Daiyu [1] Peak!"
The monk made a deep bow. Hyakujo thereupon hit him.

[1] The name of the mountain, where Hyakujo's monastery was located.