From Halachipedia
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  1. Separating the chaff from the grain using the force of wind is the Melacha of Zoreh (winnowing). [1] This Melacha also includes separating any undesired matter from a food by use of wind. [2]
  2. Separating undesired matter from food by use of artificial wind is also Zoreh. Thus, one may not blow on a mixture of peanuts and their thin outer shells to remove the shells. [3]

Applications using the wind

  1. One should not blow against the wind causing the saliva to become mist. [4]
  2. One should not shake crumbs out of a tablecloth against the wind.[5]
  3. One should not leave musty garments or books in the wind to air them out.[6]

Applications of sprays

  1. The use of aerosol cans is not in violation of Zoreh, however, one may one spray perfume or deodorant on one's body and not one's clothes.[7]
  2. One may use the spray attachment to a sink faucet on Shabbat and it is not a violation of Zoreh. (Because of Bishul one may only use cold water). [8]
  3. One may add cold water to a water vaporizer (which is already running from before Shabbat).[9]



  1. 39 Melachos (Rabbi Ribiat, vol 2, pg 373) quoting Rabbenu Chananel Shabbat 74a and Rashi 73a s.v. Zoreh and 73b s.v. Haynu.
  2. 39 Melachos (Rabbi Ribiat, vol 2, pg 374) quoting Iglei Tal Zoreah 4
  3. 39 Melachos (Rabbi Ribiat, vol 2, pg 374)
  4. Rama 319:17 based on a Yerushalmi, 39 Melachos (vol 2, pg 375). R’ Akiva Eiger (Sh"t Rabbi Akiva Eiger 20), says that this Yerushalmi is against the Bavli, since the Bavli implies that zoreh is dependent on separating good from bad, which wouldn’t apply to spit, and therefore we don’t hold like the Yerushalmi. R’ Akiva Eiger actually explains that this Yerushalmi means that one is chayiv for zorek meaning throwing not zoreh, when spitting into another reshus.
  5. 39 Melachos (vol 2, pg 376)
  6. 39 Melachos (vol 2, pg 376-7)
  7. 39 Melachos (vol 2, pg 377) quoting Hilchos Shabbos (Rabbi Eider) who quotes Rav Moshe, Sh"t Minchat Yitzchak 6:26, Chazon Ovadyah (vol 4, pg 242), Sh"t Yabia Omer 3:20
  8. 39 Melachos (vol 2, pg 378)
  9. 39 Melachos (vol 2, pg 378-9). Chazon Ovadyah (vol 4, pg 247) writes it is permitted if there's a need.
Category Topic
Mitzvot of Shabbat
Kiddush Levana - Enjoying Shabbat - Fourth meal of Shabbat - Havdalah - Having a meal on Friday - In the Spirit of Shabbat - Kiddush - Lighting Shabbat Candles - Making Early Shabbat - Making one hundred Brachot on Shabbat - Preparing foods on Shabbat - Preparing for Shabbat - Shenayim Mikrah - Kavod Shabbat - Shabbos Davening - Seudat Shabbat - Seudat Shelishit - Lechem Mishneh - Motzei Shabbat - When Does Shabbat Start?
Restrictions of Shabbat
Allowing Carrying Using an Eruv Chatzerot - Animals on Shabbat - Asking a Jew to work on Shabbat - Asking a non-Jew to work on Shabbat (Amirah LeNochri) - Benefiting from a Violation of Shabbat (Maaseh Shabbat) - Books, notebooks, and papers - Brushing Teeth on Shabbat - Building a structure on Shabbat (Boneh) - Carrying on Shabbat - Cleaning the dishes - Cleaning and Folding Garments on Shabbat - Clearing the table - Cooking (Ofeh and Bishul) - Cosmetics on Shabbat - Dancing and clapping on Shabbat - Electricity on Shabbat - Eruv Chatzerot - Eruvin - Games on Shabbat - Getting dressed on Shabbat - Giving birth on Shabbat - Grinding (Tochen) - Handling objects on Shabbat (Muktzeh) - Infants on Shabbat - Introduction to the Modern Eruv - Kneading (Lash) - Mail on Shabbat - Medicine on Shabbat (Refuah on Shabbat) - Melacha That Begins Before Shabbat - Opening bottles and containers (Boneh) - Plants on Shabbat (Zoreah) - Preparing for after Shabbat (Hachana) - Reading on Shabbat (Daber Davar) - Recreation on Shabbat - Sechirut Reshut - Separating mixtures (Borer) - Squeezing fruits (Sechita) - Speaking on Shabbat (Daber Davar) - Taking a cruise over Shabbat - Taking measurements on Shabbat - Techum - Transactions on Shabbat - Transportation on Shabbat - Going to and Staying in the Hospital on Shabbat - Wages on Shabbat (Sachar Shabbat) - Washing one’s body on Shabbat
Introduction to Melechet Machshevet - Marbeh Bshiurim - Plowing - Planting - Harvesting - Gathering - Threshing - Winnowing - Separating - Grinding - Sifting - Kneading - Baking and Cooking - Shearing - Laundering - Combing - Dyeing - Spinning - Mounting warp threads - Making two loops - Weaving - Unraveling fabric - Tying - Untying - Gluing, taping, or stapling - Ripping - Trapping - Slaughtering - Skinning - Tanning - Smoothing - Scoring - Cutting precisely - Writing - Erasing - Building - Demolishing - Completing a vessel - Extinguishing a flame - Kindling a fire - Carrying