Veset: Difference between revisions

# If a woman sees her period on a certain day on the Hebrew calendar that is called a veset hachodesh.<ref>The Gemara Niddah 39b and 64a both use cases of veset that are tied to the monthly calendar. Tosfot 64a s.v. itmar explains that a veset is established by the Jewish calendar even if some months are 29 days and others are 30. This is also the opinion of the Raavad ([http://www.hebrewbooks.org/pdfpager.aspx?req=8785&st=&pgnum=46 Baalei Hanefesh p. 48] cited by Rashba), Rashba (Taharat Habayit 9a and Mishmeret Habayit 9a), Rambam (Isurei Biyah 8:6), Maggid Mishna (Isurei Biyah 8:6), Tur and Shulchan Aruch 189:6. Even though the Ramban (Chiddushim 64a) questions this approach in his Hilchot Niddah 5:12 he accepted it.</ref>

# A corollary of the veset of the month is the veset of the day of the week. A woman who usually sees on a day of the week every certain number of works that creates a veset. For example, if she saw on Sunday and then 29 days later on a Sunday she needs to be concerned about the Sunday after four weeks later. That weeks a veset with three times and is a veset sheino kavuah with one time. <ref>Niddah 11a, Rashba ([http://www.hebrewbooks.org/pdfpager.aspx?req=8922&st=&pgnum=355 Torat Habayit 9a]), Shulchan Aruch YD 189:6</ref> If a veset of the day of the week can be viewed as a veset of haflagah we look at it as a veset of haflagah.<Ref>Chavot Daat 189:4 writes that if the veset of the day of the week is established as a haflagah of the same day of the week then it is a veset of haflagah. For example, if a woman saw on 4 Sundays 3 weeks apart then she has a veset of haflagah of 22 days. However, if she only saw 3 times like that then she only has a veset for every third Sunday. Igrot Moshe YD 1:122 isn't certain that we follow the Chavot Daat where the veset of the day of the week is consistent but is sure that we follow a haflagah if the day of the week is increasing.</ref>