Two lions

Joshu

The master instructed the assembly, "At my place there is a lion that comes out of the cave, and the lion that stays in the cave. Yet it is difficult to have a cub."

At that time a monk snapped his fingers as a reply.

The master said, "What's that?"

The monk said, "A cub."

The master said, "if I say it's a cub, there is immediately transgression. Can you then make another leap?
From "The Recorded Sayings of Zen Master Joshu. Shambala, Boston, 2001, p. 140."