If the entry/exit openings of a stream into the yard are less than 3 tefachim wide, is any partition required?

ShabbatEruvin and Reshuyot

Synopsis

When the openings through which the stream enters and exits the yard are each less than 3 tefachim wide, no partition is required at all, since lavud treats those openings as closed.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

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