A duel

A brave person knows when to sheath his sword in battle.

He stops only for a while, to reassess, recollect and restructure.

While doing so he hides in the darkness unseen by the opponent

He hides on a tree.

And waits

The foe gets impatient and loses wisdom and focus,

Thinking the warrior has fled,

He sheathed his sword,

Upon sheathing the warrior flew from the tree,

And cuts his foe's two thumbs off

So no terror could be ever  committed again