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1. The Gemara concludes that the lighting, and not the placing, of the Chanukah candles is the primary fulfillment of the Mitzvah.
2. A person can fulfill the Mitzvah to light the Chanukah lights by paying towards the cost of the candles.
3. A married man may fulfill the Mitzvah by having his wife light for him.
4. The Gemara discusses the blessings recited by those who light and who see Chanukah candles.
5. If a person's house has two entranceways from two different directions, he must light in both places.
A BIT MORE
1. This is evident from the blessing recited on the kindling of the Chanukah lights, ". to kindle the light of Chanukah," and not ". to place the light of Chanukah."
2. For example, when one is a guest at someone else's home, he may fulfill his Mitzvah by giving his host money towards the cost of the candles.
3. For example, a married man who is traveling does not have to light candles, or even give money towards his host's expenses for the candles, since his wife lights for him at home.
4. The blessings are: "l'Hadlik Ner Shel Chanukah," "she'Asah Nisim la'Avoseinu.," and "Shehecheyanu" (said only on the first night). A person who is unable to light may recite the blessing of "she'Asah Nisim" (and "Shehecheyanu" on the first night) when he sees Chanukah candles.
5. If a stranger passes by an entranceway that has no Chanukah lights, he may suspect that the homeowner did not fulfill the Mitzvah of lighting. Therefore, the law is that one should light in both entranceways.
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