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One is liable for direct or immediate damages, not indirect or delayed ones.
Suppose a camel laden with flax passed through the street, and its flax protruded into a shop and was ignited by the shopkeeper's lamp and set fire to a large tower; the owner of the camel is liable. If the shopkeeper puts his lamp outside, the shopkeeper is liable. Rabbi Yehuda says that the shopkeeper is not liable for a Hanukkah light.
Art: Arabs and Camels in a Courtyard by Marie Nivoulies