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unusual facts about Isserles



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Tekufah

The danger in unused water may be avoided by putting in it a piece of iron or an iron vessel (Bet Yosef on the Tur, and Isserles' note to Shulḥan Aruk, Oraḥ Ḥayyim, 455, 1; Be'er Hetev, to Yore De'a, 116, 5).


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