The Gates of Paradise

A soldier named Nobushige came to Hakuin, and asked: "Is there really a paradise and a hell?"
"Who are you?" inquired Hakuin.
 "I am a samurai," the warrior replied.
 "You, a soldier!" exclaimed Hakuin. "What kind of ruler would have you as his guard? Your face looks like that of a beggar."
Nobushige became so angry that he began to draw his sword! Your weapon is probably much too dull to cut off my head." As Nobushige drew his sword, Hakuin remarked: "Here open the gates of hell!"
At these words the samurai, perceiving the master's discipline, sheathed his sword and bowed.
"Here open the gates of paradise," said Hakuin.