English: What is the force of “round about”? Rav Mesharshiya said: From here [we learn] that the boundaries [metzarim] are included by the Torah [in the sale of a field].
On the daf / in context: The extra phrase “in all its border round about” is taken to teach that the purchaser of a field also acquires the boundary strips and the trees planted on the boundary itself. Some Rishonim limit the application; others treat it as a full inclusion of the metzarim.
Type of Learning
Custom (Bavli — inclusion of field boundaries)
What Is Learned
When one buys a field, the Torah’s language of “all its border round about” includes the boundary land and the trees growing on the boundary as part of the conveyance.