''Shatnez'' (or ''shaatnez'', ; he, ) is cloth containing both
wool and
linen
Linen () is a textile made from the fibers of the flax plant.
Linen is very strong, absorbent, and dries faster than cotton. Because of these properties, linen is comfortable to wear in hot weather and is valued for use in garments. It also ...
(
linsey-woolsey
Linsey-woolsey (less often, woolsey-linsey or in Scots, ) is a coarse twill or plain-woven fabric woven with a linen warp and a woollen weft. Similar fabrics woven with a cotton warp and woollen weft in Colonial America were also called linsey-wo ...
), which
Jewish law
''Halakha'' (; he, הֲלָכָה, ), also Romanization of Hebrew, transliterated as ''halacha'', ''halakhah'', and ''halocho'' ( ), is the collective body of Judaism, Jewish religious laws which is derived from the Torah, written and Oral Tora ...
, derived from the
Torah, prohibits wearing. The relevant biblical verses ( and ) prohibit wearing wool and linen fabrics in one garment, the blending of different species of animals, and the planting together of different kinds of seeds (collectively known as ).
Etymology
The word is not of Hebrew origin, and its etymology is obscure.
Wilhelm Gesenius's ''Hebrew Dictionary'' cites suggestions that derive it from
Semitic
Semitic most commonly refers to the Semitic languages, a name used since the 1770s to refer to the language family currently present in West Asia, North and East Africa, and Malta.
Semitic may also refer to:
Religions
* Abrahamic religions
** ...
origins, and others that suggest
Coptic
Coptic may refer to:
Afro-Asia
* Copts, an ethnoreligious group mainly in the area of modern Egypt but also in Sudan and Libya
* Coptic language, a Northern Afro-Asiatic language spoken in Egypt until at least the 17th century
* Coptic alphabet ...
origin, finding neither convincing. The
Septuagint translates the term as , meaning 'adulterated'.
The
Mishnah in
tractate Kil'ayim (9:8), interprets the word as the
acrostic
An acrostic is a poem or other word composition in which the ''first'' letter (or syllable, or word) of each new line (or paragraph, or other recurring feature in the text) spells out a word, message or the alphabet. The term comes from the Fre ...
of three words: 'combing', 'spinning', and 'twisting'.
The
Modern Hebrew word means 'mixture'.
Interpretation
Early writers, like
Maimonides, state that the prohibition was a case of the general law () against imitating
Canaanite customs. Maimonides wrote: "the
heathen __NOTOC__
Heathen or Heathens may refer to:
Religion
*Heathen, another name for a pagan
*Heathen, an adherent of Heathenry
Music
*Band of Heathens, a North American rock and roll band
*Heathen (band), a North American thrash metal band
*The Hea ...
priests adorned themselves with garments containing vegetable and animal materials, while they held in their hand a seal of mineral. This you will find written in their books".
According to modern
biblical scholars (and
Josephus), the rules against these mixtures are survivals of the clothing of the ancient Jewish temple and that these mixtures were considered to be holy and/or were forfeited to a sanctuary. It may also be observed that linen is a product of a riverine agricultural economy, such as that of the Nile Valley, while wool is a product of a desert, pastoral economy, such as that of the Hebrew tribes. Mixing the two together symbolically mixes Egypt and the Hebrews. It also violates a more general aversion to the mixing of categories found in the Leviticus holiness code, as suggested by anthropologists such as
Mary Douglas
Dame Mary Douglas, (25 March 1921 – 16 May 2007) was a British anthropologist, known for her writings on human culture and symbolism, whose area of speciality was social anthropology. Douglas was considered a follower of Émile Durkhei ...
.
Rabbi
Abraham Isaac Kook
Abraham Isaac Kook (; 7 September 1865 – 1 September 1935), known as Rav Kook, and also known by the acronym HaRaAYaH (), was an Orthodox rabbi, and the first Ashkenazi Chief Rabbi of British Mandatory Palestine. He is considered to be one of ...
suggested that shearing wool from sheep is, at some level, "a form of theft, the oppression of the weak at the hands of the strong." Since utilizing the flax plant and sheep are not – in absolute terms – morally equivalent, the Torah sought to distinguish between them, to instill a sensitivity towards
animal welfare
Animal welfare is the well-being of non-human animals. Formal standards of animal welfare vary between contexts, but are debated mostly by animal welfare groups, legislators, and academics. Animal welfare science uses measures such as longevity ...
.
Limitations of the law
Definition of ''shatnez'' material
In the Torah, one is prohibited from wearing ''shatnez'' only after it has been carded, woven, and twisted, but the rabbis prohibit it if it has been subjected to any one of these operations.
[Talmud, Tractate Niddah 61b] Hence
felt made with a mixture of wool compressed together with linen is forbidden.
Silk, which resembled wool, and
hemp
Hemp, or industrial hemp, is a botanical class of ''Cannabis sativa'' cultivars grown specifically for industrial or medicinal use. It can be used to make a wide range of products. Along with bamboo, hemp is among the fastest growing plants o ...
, which resembled linen, were formerly forbidden for appearance's sake, but were later permitted in combination with either wool or linen because they are now distinguishable. Hempen thread was thus manufactured and permitted for use in sewing woolen clothing.
Linen mixed with fibres produced by other animals (e.g.,
mohair or
camel hair) is not ''shatnez''. The character of threads spun from a mixture of sheep's wool with other fibres is determined by the majority; if only a minority of the fibre is sheep's wool it is not considered to be wool. None the less, a mixture of any of these materials with linen is Rabbinically forbidden because of the impression it creates.
Permitted applications
Kehuna clothing
Rabbinic Judaism maintains that ''shatnez'' was permitted in the case of the'' avnet'' (
Kohen's girdle), in which fine white linen was interwoven with purple, blue, and scarlet material. According to the rabbis, the purple, blue, and scarlet were made from wool and interwoven with the fine linen.
Karaite Judaism maintains that the purple, blue, and scarlet materials must also have been made of linen, since the Torah prohibits wearing garments made from combinations of wool and linen. The Torah does not state from what materials the purple, blue, and scarlet threads were made.
The phrase regarding the
kohanim sons of Zadok
The Sons of Zadok ( he, בְּנֵי צָדוֹק ''bǝnê Ṣādōq'') are a family of priests, kohens, descended from Zadok, the first High Priest, high priest in Solomon's Temple.
The sons of Zadok are mentioned three times in the Hebrew Bible, ...
, "they shall not gird themselves with any thing that causeth sweat" is interpreted in the Talmud to mean "they shall not gird themselves around the bent of the body, where sweat effuses most". Rabbi
Judah haNasi
Judah ha-Nasi ( he, יְהוּדָה הַנָּשִׂיא, ''Yəhūḏā hanNāsīʾ''; Yehudah HaNasi or Judah the Prince) or Judah I, was a second-century rabbi (a tanna of the fifth generation) and chief redactor and editor of the ''Mis ...
was of the opinion that the girdle of the ordinary priest was of ''shatnez'', but Rebbi Eleazar says it was of fine linen. The Talmud states that the high priest wore a linen girdle on
Yom Kippur and a girdle of ''shatnez'' on all other days.
Everyday'' tzitzit''
Torah law forbids ''kil'ayim ''(''shatnez'') - "intertying" wool and linen together, with the two exceptions being garments of ''kohanim'' and ''tzitit''. Concerning ''tzitzit,
chazal
Chazal or Ḥazal ( he, חז״ל), an acronym for the Hebrew "Ḥakhameinu Zikhronam Liv'rakha" (, "Our Sages, may their memory be blessed"), refers to all Jewish sages of the Mishna, Tosefta and Talmud eras, spanning from the times of the fina ...
'' permit using wool and linen strings in tandem only when genuine ''
tchelet'' or ''
tekhelet
''Tekhelet'' ( he, תְּכֵלֶת ''təḵēleṯ''; alternate spellings include ''tekheleth'', ''t'chelet'', ''techelet'' and ''techeiles'') is a "blue-violet", "blue", or "turquoise" dye highly prized by ancient Mediterranean civilizations. I ...
'' is available, whereas ''
kabbalist'' sources take it a step further by encouraging its practice.
Contact with ''shatnez''
The Talmud argues that a woolen garment may be worn over a linen garment, or vice versa, but they may not be knotted or sewed together. ''Shatnez'' is prohibited only when worn as an ordinary garment, for the protection or benefit of the body, or for its warmth,
[Talmud, Tractate Betzah 15a] but not if carried on the back as a burden or as merchandise. Felt soles with heels are also permitted,
because they are stiff and do not warm the feet. In later times, rabbis liberalised the law, and, for example, permitted ''shatnez'' to be used in stiff hats.
Cushions, pillows, and tapestry with which the bare body does not touch do not come under the prohibition, and lying on ''shatnez'' is technically permitted. However, classical rabbinical commentators feared that some part of a ''shatnez'' fabric might fold over and touch part of the body; hence, they went to the extreme of declaring that even if only the lowest of 10 couch-covers is of ''shatnez'', one may not lie on them.
Observance and enforcement of the ''shatnez'' law

Many people bring clothing to special experts who are employed to detect the presence of ''shatnez''. A linen admixture can be detected during the process of dyeing cloth, as wool absorbs dye more readily than linen does.
Wool can be distinguished from linen by four tests—feeling, burning, tasting, and smelling; linen burns in a flame, while wool singes and creates an unpleasant odor. Linen thread has a gummy consistency if chewed, due to its pectin content; a quality only found in bast fibers.
Observance of the laws concerning ''shatnez'' became neglected in the 16th century, and the
Council of Four Lands found it necessary to enact (1607) a ''
takkanah'' ("decree") against ''shatnez'', especially warning women not to sew woolen trails to linen dresses, nor to sew a velvet strip in front of the dress, as velvet had a linen back.
[Gratz, ''Gesch.'' vii. 36, Hebrew ed., Warsaw, 1899]
Observant Jews in current times also follow the laws of ''shatnez'', and newly purchased garments are checked by experts to ensure no forbidden admixtures are used. In addition to the above-mentioned methods, modern'' shatnez'' experts employ the use of
microscopy
Microscopy is the technical field of using microscopes to view objects and areas of objects that cannot be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of micr ...
to determine textile content. In most cases, garments that do not comply can be made compliant by removing the sections containing linen. Some companies label compliant products with "shatnez-free" tags.
Karaites and ''shatnez''
Karaite Jews, who do not recognize the
Talmud, forbid the wearing of garments made with linen and wool (and fibres from any plant and/or any animal) under any circumstances. It is even forbidden for one to touch the other.
References
Bibliography
*
Maimonides. ''
Mishneh Torah, Kilayim'', x.;
* Ṭur Yoreh De'ah;
*
Shulkhan Arukh,
Yoreh De'ah, 298–304;
* Israel Lipschitz, Batte Kilayim. Appended to his commentary on the Mishnah, section Zera'im: Ha-* Maggid (1864), viii., Nos. 20, 35;
* M. M. Saler, Yalḳuṭ Yiẓḥaḳ ii. 48a, Warsaw, 1899.
* Holy Bible, New International Version®, NIV® Copyright © 1973, 1978, 1984, 2011
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