An oath of testimony is only relevant when the claimant has asked the witnesses to testify. Shmuel ruled that if the claimant was chasing the witnesses and they swore they did not know any testimony, this would not be considered an oath of testimony. Why did Shmuel need to specify this particular case?

From where do we derive that an oath of testimony initiated by others (rather than the witnesses themselves) is only valid if the witnesses agree to it in court? If the witnesses agreed to the oath while in court but had denied knowledge of the testimony multiple times previously outside the court, from where do we derive that they are liable for each denial made outside the court?

The Mishna discusses a case where both witnesses testified together. Since two people cannot testify at exactly the same moment, this is understood to mean one witness testified immediately after the other (toch k'dei dibbur - within the time it takes to speak a few words).

The Mishna ruled that if the two witnesses did not testify one right after the other, the second witness is exempt from bringing a sacrifice. This principle is a matter of debate when applied to an oath of testimony involving a single witness. What is the underlying basis of this debate?

Abaye makes a statement that sounds like a riddle: all agree regarding one witness in a sotah case, all agree regarding two witnesses in a sotah case, there is debate regarding two witnesses in a sotah case, all agree regarding one witness, and all agree regarding a case where the person who should take the oath is unable to do so. What is the meaning of each part of this cryptic statement? Rav Pappa adds additional cases where all agree.