宏智禪師廣錄 1.172

1.172

上堂舉僧問魯祖。如何是不言言。祖云。爾口在甚麼處。僧云。某甲無口。祖云。尋常將甚麼喫飯。僧無語。祖便打。師云。祇解握死蛇頸。不能捋猛虎鬚。當時待他問爾口在甚麼處便與一喝。拂袖便行。直饒魯祖全機。往往做手脚不及。

Ascending the hall, he cited: A monk asked Ruzu, "What are unspoken words?" / Ruzu said, "Where is your mouth?" / The monk said, "I have no mouth." / Ruzu said, "What do you usually eat meals with?" / The monk was speechless. Ruzu then struck him. / The master said, "He only knew how to hold a dead snake by the neck, but could not pluck the fierce tiger's whiskers. If at that time he had waited for him to ask, 'Where is your mouth?', and simply given a shout, flicked his sleeves, and walked away—even with Ruzu's full dynamic action, he would often have been unable to make a move in time."