Gittin: chapter 4
Gittin 32
Opens Gittin's chapter on canceling a get mid-transit, the valid language for doing so, and Hillel's prozbul enactment that let loans survive the Shemittah year.
Gittin 33
Covers the requirement of ten witnesses to cancel an agent's authority over a get, and a dispute over whether rabbinic-level kiddushin carries the same weight as Torah-level kiddushin.
Gittin 34
Covers the requirement to include every known name and nickname in a get, Hillel's prozbul decree, and a machloket over whether a cancelled get can later be reinstated.
Gittin 35
Covers the halachic reasoning behind exempting (or requiring) a widow's oath before collecting her ketubah, and a story involving a curse and a tragic death that shaped the practice.
Gittin 36
Covers the rabbinic basis for overriding the Torah-level cancellation of debts during Shemittah, Hillel's authority to enact it, and when a greater court may overturn an earlier one's decree.
Gittin 37
Covers the minimal amount of real estate needed to validate a prozbul, why orphans don't need one, and a dispute over who holds ketubah money when competing claims arise.
Gittin 38
Covers the debate over whether freeing a Canaanite slave transgresses a mitzvah, cases where a slave may keep his own money, and Rabbi Eliezer's famous act of freeing a slave to complete a minyan.
Gittin 39
Covers whether money alone can free a slave or a get-like document is required, and a story involving a hat exchange used to test the validity of a slave's freedom.
Gittin 40
Covers a dispute over whether wearing tefillin can serve as proof of a slave's freedom, a father's will freeing his slave, and the special rules when a minor's guardian frees a slave on his behalf.
Gittin 41
Covers who has the authority to free a slave held as security, and the status of a person who is legally half-slave and half-free.
Gittin: 42
A Gittin sugya debating whether a slave freed by only one of two partners can function in his free half, the Mishnah's dispute over whether the remaining master can be compelled to complete the freedom, and the halachos governing a half-slave's marriage options.
Gittin 43
Covers a dispute over selling a fine's future payment before it's collected, whether a terminally flawed slave is considered worthless, and the formula for a slave's release clause.
Gittin 44
Covers the penalties imposed for selling a Jewish slave to a non-Jew, comparing the fine to that of selling a large animal, and a case of a slave captured by bandits.
Gittin 45
Covers the halachic limits on redemption prices for captives (to avoid incentivizing kidnapping), the verse forbidding gentiles from settling in the Land, and women's exemption from several mitzvos.
Gittin 46
Covers the Mishnah on divorcing a wife for a 'bad name' or a vow, the famous story from Tzidon illustrating the leniency, and whether a husband must state his reason at the time of divorce.