English: “In one of your cities” — It was taught: One may not declare three cities as ir ha-nidachas, because the verse says “in one”; but one may declare one or two, because the verse says “your cities.”
On the daf / in context: The singular “one” limits the number of cities that may be condemned at once, while the plural “your cities” permits more than a single city.
Type of Learning
Derash on the verse (Sanhedrin) — the numerical limit on cities that may be condemned together.
What Is Learned
At most two cities may be declared ir ha-nidachas; three may not.