公案 · kōan

27The Donkey and the Thief勘辨

一日普化在僧堂前喫生菜,師見云:「大似一頭驢。」普化便作驢鳴。師云:「這賊!」普化云:「賊賊!」便出去。

One day Puhua stood in front of the monks' hall eating raw greens. Linji saw him and said, "You look just like a donkey."
Puhua brayed.
Linji said, "You thief."
Puhua said, "Thief, thief!" — and walked off.