The
Talmud (Tractate
Shabbat 115a) directs that holy writings in other than the Hebrew language require
genizah, that is, preservation. In Tractate
Pesachim 118b,
bet genizah is a treasury. In Pesachim 56a,
Hezekiah hides (
ganaz) a medical work; in Shabbat 115a,
Gamaliel orders that the
targum to the
Book of Job should be hidden (
yigganez) under the
nidbak (layer of stones). In Shabbat 30b, there is a reference to those rabbis who sought to categorize the books of
Ecclesiastes and
Proverbs as
heretical; this occurred before the canonization of the
Hebrew Bible, when disputes flared over which books should be considered Biblical. The same thing occurs in Shabbat 13b in regard to the
Book of Ezekiel, and in Pesachim 62 in regard to the
Book of Genealogies (
Sefer Yochasin, a collection of
tannaitic exegesis or
midrash on the
Book of Chronicles). In medieval times, Hebrew scraps and papers that were relegated to the genizah were known as
shemot 'names', because their sanctity and consequent claim to preservation were held to depend on their containing the
"names" of God. In addition to papers, articles connected with ritual, such as
tzitzit,
lulavim, and sprigs of myrtle, are similarly stored. By far, the best-known genizah, which is famous for both its size and spectacular contents, is the
Cairo Geniza. Recognized for its importance and introduced to the Western world in 1864 by
Jacob Saphir, and chiefly studied by
Solomon Schechter,
Jacob Mann and
Shelomo Dov Goitein, the genizah had an accumulation of at least 300,000 Jewish manuscripts and manuscript fragments dating from 870 to the 19th century. These materials were important for reconstructing the religious, social and economic history of Jews, especially in the Middle Ages. In 1927, a manuscript containing
Nathan ben Abraham's 11th-century
Mishnah commentary was discovered in the genizah of the Jewish community of
Sanaa, Yemen. Nathan had served as
President of the Academy under the revised
Palestinian geonate, shortly before its demise in the early 12th century CE. In 2011, the so-called
Afghan Geniza, an 11th-century collection of manuscript fragments in Hebrew, Aramaic, Judaeo-Arabic and Judeo-Persian, was found in Afghanistan, in caves used by the
Taliban. In Germanic lands genizot have been preserved in buildings dating back to the early modern period and till today, dozens of genizot have been saved. Researchers began to study the material, soon realizing that these findings could provide insight into the life of Jewish rural communities from the 17th to 19th century. The and other researchers are dealing with the inventory, the digitization and the publication of the finds. ==Today==