R. DovBer, the Maggid of Mezeritch

His students used to wonder, “What is it that he listens for?” The only sound to be heard from the edge of the lake is the croaking of the frogs! Who wants to listen to that horrid sound!

Instead of answering the chassid's question, Rabbi DovBer dispatched him to the town of Zhitomir. "Go visit my disciple, Rabbi Zev" he said. "Only he can provide you with the answer you seek"

The thump of the bandit falling to the ground aroused the captive from his reverie. With the small amount of water he had, he managed to revive him from his faint.