Gutei's One-Finger Zen, Part 4

Whenever Gutei was asked questions, he did nothing but raise a finger.

One day, someone asked his attendant what the master’s teaching was, the boy mimicked his master’s action and raised a finger. When Gutei heard this, he cut off the boy’s finger. 

The boy ran away crying. Gutei called the boy’s name. When the boy turned his head, Gutei raised his finger. 

The boy suddenly became enlightened.