Thursday, December 15, 2011

A light which a Jew will extinguish on Shabbat


One may not turn on a light before Shabbat, even for a mitzvah like prayer, if he knows that a Jew will turn it off on Shabbat. However, one may turn it on if he is uncertain whether a Jew will turn it off.

(Rav Moshe Feinstein, Igrot Moshe Orach Chaim 3:43)

Have a great day,

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