(Mishnah): If property fell to a Yevamah, Beis Shamai and Beis Hillel agree that she may sell or give it, and it is valid.

Question: If she died, what do we do with her Kesuvah and the property that enters and leaves the marriage with her?

Answer #1 (Beis Shamai): Her husband's heirs split it with her father's heirs;

Answer #2 (Beis Hillel): The property retains its status quo. The Kesuvah stays by the husband's heirs, and property that enters and leaves with her stays by her father's heirs.

(Gemara) Question: Here (the Reisha) you say that [Beis Shamai agree that a Shomeres Yavam] may sell or give, and it is valid, and here (the Seifa) you say that [they say that] her husband's heirs split it with her father's heirs?!

Answer (R. Yosi ben Chaninah): You say that she may sell or give, and it is valid and the sale is valid, when the property fell to her before she was a Shomeres Yavam. You say that her husband's heirs split it with her father's heirs, when it fell to her after she became a Shomeres Yavam.

If property fell to her before she was a Shomeres Yavam, and it made Peros after she became a Shomeres Yavam, [the Peros] are like property that fell to her after she became a Shomeres Yavam.

(R. Ze'ira): The Yavam [in our Mishnah] - Beis Shamai are unsure if he is like a husband, or he is not like a husband;

If he is like a husband, he should inherit everything. If he is not like a husband, he should not inherit at all. Amidst Safek, her husband's heirs split it with her father's heirs,

Question: Beis Hillel hold that surely he is like a husband (for they say that he inherits her Kesuvah). He should inherit everything!

Answer: [He does not get Nichsei Melug,] for even his [dead] brother only had rights to the Peros [the property was in her Chazakah].

(R. Hoshayah - Beraisa): Heirs who inherit her Kesuvah (Nichsei Tzon Barzel) are obligated to bury her.

(R. Yosah): Had R. Hoshayah not taught this, we would not have known that since she does not have a Kesuvah (her Yavam does not inherit Nichsei Tzon Barzel), she has no burial (he need not bury her. We would have thought that in any case he must bury her, like a regular married woman.)

Question: A [married] woman who has no Kesuvah (Nichsei Tzon Barzel), does she have no burial?! (Surely she has! Why should a Yevamah be different?)

Answer: [Chachamim enacted that a regular married] woman who has no Kesuvah, she has burial. However, here (a Yevamah), if she has a Kesuvah (the Mes left over enough property for a Kesuvah), she has burial. If she has no Kesuvah, she has no burial. (We explained this like SEFER NIR.)