Testimony through an interpreter: Makkot 6b, 6b-7a; Menachot 65a
Testimony requires 2 witnesses: Gittin 2b; Makkot 6b
What makes witnesses into a "Set": Makkot 6a, 6b
"Edut Meyuchedet," witnesses who saw an event from separate locations: Makkot 6b
The status of multiple witnesses who testify within Toch Kedei Dibbur of each other: Makkot 6a
Determining whether people had intended to function as witnesses when they saw the event: Makkot 6a
Testimony that a man had been convicted before another court: Makkot 7a
Requiring witnesses to stand while testifying: Zevachim 16a, 16b Honoring a witness who is a talmid chacham by permitting him to sit while testifying: Zevachim 16a, 16b