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Can you Toivel Keilim on Shabbos?

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ספק חשיכה, ספק לא חשיכה--אין מעשרין את הוודאי, ואין מטבילין את הכלים, ואין מדליקין את הנרות; אבל מעשרין את הדמאי, ומערבין, וטומנין את החמין. – Baal Shemot Tovot Apr 3 '12 at 15:36
up vote 3 down vote accepted

Tevilas keilim may be done by day or night, except Shabbos or Yom Tov. In case of great necessity, where one needs to use an untoveled keili on Shabbos or Yom Tov, the utensil should be given to a non-Jew as a present and the Yehudi should borrow it back. After Shabbos, if the Yehudi re-purchased the utensil from the non-Jew, it must be toveled with a brocha. If the Yehudi continues to use the keili without paying for it, the keili will require tevila without a brocha. If one is in doubt whether a keili needs tevila, a Rav must be consulted. If one is in doubt if a vessel that requires tevila was toveled, it should now be immersed without a brocha.


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Question: All forbid Tevilas Kelim on Shabbos. What is the reason?

Answer #1 (Rabah): This is a decree lest one carry them four Amos in Reshus ha'Rabim.

Answer #2 (Rav Yosef): It is a decree lest one squeeze (water out of clothing).

Question (Abaye): Why is it forbidden to be Tovel Kelim for which this is not a concern (e.g. a knife)?

Answer (Rav Yosef): It is a decree lest one be Tovel other Kelim and squeeze them.


Rambam (Hilchos Shabbos 23:8): One may not be Tovel Tamei Kelim on Shabbos because it looks like Tikun Keli.


There are opinions that hold you may - please see link for at length discussion

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