Can a traveler who does not recognize a specific landmark rely on a companion who does recognize it to acquire Shabbat rest at that location?

Is an eruv techumin placed in a cemetery valid?

3 opinions

Is an eruv techumin placed in a beit hapras (field plowed over a grave) valid, even for a Kohen?

1 opinions

Is an eruv placed on top of a reed or giant reed (kaneh/kandas) growing from the ground valid?

2 opinions

Is an eruv valid if placed in a locked tower whose key was lost, or buried under a rockslide before Shabbat?

1 opinions

What happens if an eruv techumin placed at the end of the boundary rolls within or beyond four cubits?

1 opinions

If the eruv was lost, burned, became impure (as terumah), or rolled beyond four cubits — does timing (before or after nightfall) affect its validity, and how is doubt resolved?

1 opinions

What is the primary method of acquiring an eruv techumin and what are the requirements for food quantity?

3 opinions

May an eruv techumin be sent via an agent, and who is qualified to serve as agent?

2 opinions