General laws


General laws applicable on fast days:

Rinsing the mouth:[1] On a public fast day one does not rinse his mouth in the morning. [If however this is causing one discomfort he may be lenient to rinse his mouth.[2]]



May one brush ones teeth on a fast day?[3]

If not doing so will cause one pain or discomfort it is allowed.


May one use mouthwash if not doing so will cause pain and discomfort?[4]

Yes it may be used in such a case.


May one bathe on the 10th of Teves?

Some are stringent to avoid bathing on all the four fasts.[5]


May one listen to music and dance on the 10th of Teves?[6]

Some are accustomed to be stringent in this matter.

[1] Michaber 567/3; Sefer Haminhagim p. 4 [English]; Ketzos Hashulchan 2 footnote 25 in name of Ateres Zikeinim

[2] M”B 567/11

[3] So rules Minchas Yitzchak based on 567/3 M”B 11 which allows to rinse ones mouth in a case of pain

[4] Kinyan Torah 2/49; See Mateh Efraim 602/3; Piskeiy Teshuvos 567 footnote 3

[5] Based on Bach brought in M”B 550/6 that a Baal Nefesh is to be stringent to follow all the oppressions of Tishe Beav on all the other fasts as well.

[6] See Biur Halacha 552 “Merosh Chodesh”; Kitzur SHU”A 122/1 “On the 17th of Tamuz and the tenth of Teves it is forbidden”

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