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YEVAMOS 43 - dedicated to the memory of Hagaon Rav Yisroel Zev (ben Rav Avrohom Tzvi) Gustman, ZT'L, Rosh Yeshiva of Yeshivas Netzach Yisrael-Ramailes (in Vilna, Brooklyn, and then Yerushalayim), author of Kuntresei Shi'urim, and renowned Dayan in pre-war and post-war Vilna, in honor of his Yahrzeit (28 Sivan). Dedicated by Harav Eliezer Stern and Harav Zalman Stern of Brooklyn NY, and Yechiel Wachtel and Michoel Starr of Yerushalayim, who merited to learn from Rav Gustman in Yerushalayim.


A comb used for linen that has lost most of its teeth such that only two remain retains its Tamei status, but if only one tooth remains, it is Tahor.
A comb used for wool that is missing every other tooth is Tahor. If there are three consecutive teeth remaining on the outside row of teeth, or two consecutive teeth remaining on the inside row of teeth, it is Tamei. (1)
If a thick tooth was detached from a comb, or a thin tooth was detached with a small wooden holder, it is Tamei. If a thin tooth was detached without a small wooden holder, it is Tamei only if it was prepared for use as a candle-sweeper or as a pin.
A woman who is nursing must wait 24 months before she remarries, not including the day of birth and the day of the Kidushin. A widow must wait three months to remarry, not including the day of the death and the day of the Kidushin.
During the week in which Tish'ah b'Av falls, haircuts and washing clothes are forbidden, but on Thursday they are permitted for the honor of Shabbos.
Rebbi Yosi says that a woman may become betrothed with Kidushin immediately upon her divorce. However, a widow must wait thirty days, because she is in mourning. Both are prohibited from getting married with Nisu'in until after three months have passed.
If an Arusah dies, the husband does not become an Onen, he does not inherit her property, and if he is a Kohen he may not become Tamei for her. If the husband of an Arusah dies, she does not become an Onen, and she does not have a Mitzvah to become Tamei for him, but she does receive her Kesuvah. (2)
From Rosh Chodesh Av until Tish'ah b'Av, one must minimize commerce, buying and selling, building, planting, and performing Kidushin. During the week in which Tish'ah b'Av falls, one may not take a haircut or wash clothing. Some say that these things are prohibited the entire week. (3)
Rav Ashi says that according to Rebbi Yosi, even though one may perform Kidushin during the week of Tish'ah b'Av, it is forbidden for a person who is mourning the death of a relative to perform Kidushin. (4)


1. A comb used for wool has two rows of teeth. The outside row is the most important. If there are three consecutive teeth remaining on the outside row, the comb is still usable. However, if one of those three teeth is the thick outer one, the comb is Tahor, because the thick outer one cannot be used as part of the comb.
2. An Arusah receives a Kesuvah only if the husband had already written one for her.
3. The Tana of this Beraisa disagrees with the other Beraisa which permits Kidushin during the week of Tish'ah b'Av. Rav Ashi, however, maintains that this Beraisa agrees that Kidushin is permitted during the week of Tish'ah b'Av, and the Beraisa prohibits only a Se'udas Eirusin.
4. The mourning of Tish'ah b'Av is a public mourning, and it is a mourning for an ancient event. Therefore, it is more lenient than the mourning for a relative who passed away.


Rebbi Elazar in the name of Rebbi Chanina ha'Gadol says that a widow does not have to wait a full three months before she does Kidushin. She must wait only most of the first month, the entire second month, and most of the third month. However, this leniency applies only to Eirusin. For Nisu'in, a woman must wait a full three months. The reason for this leniency is that if a woman is pregnant, it is apparent already before three full months pass. Therefore, if most of the third month has passed and she does not look pregnant, most likely she is not pregnant. If so, why is only Eirusin allowed and not Nisu'in? The answer is that since some women do not appear pregnant until a full three months have passed, Rebbi Chanina ha'Gadol did not want to be lenient regarding Nisu'in, but only with regard to Eirusin. Since the prohibition within the first three months is only because of a Gezeirah, it is permitted to be lenient. (Keren Orah)


The Chachamim decreed that a person may not marry or become betrothed to a woman who is pregnant from someone else, or who is nursing someone else's child until the child has already nursed for 24 months. (Shulchan Aruch EH 13:11)
The reason for the prohibition is that perhaps she will get pregnant and her milk will spoil, putting the child in danger. (Beis Shmuel)

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