Elazar Menachem Man Shach (Hebrew: אלעזר מנחם מן שך, Elazar Shach; January 1, 1899 O.S. – November 2, 2001) was a Lithuania-born Israeli rabbi and posek. He was born in Vabalninkas (Vaboilnik in Yiddish), Lithuania, but he fled to Palestine for fear of the Holocaust.
Rabbi-Shach was thought to be a very leading authority in Haredi Jewish society.[1][2]
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