Eruvin (Talmud)

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An eruv, from the Hebrew word for "mixture" and also spelled eiruv or erub (plural eruvin), is a ritual enclosure. It allows Jewish residents or visitors to carry certain items outside their homes on the Sabbath and Yom Kippur. By merging several private and public areas into a single, larger private domain, it overrides the usual prohibition against moving objects between private and public spaces on these days.

This means religious Jews can carry house keys, tissues, medicines, or babies, and can use strollers and canes. Orthodox Judaism bans motorized transport on Shabbat and holidays, but an eruv makes non-motorized options like strollers and wheelchairs permissible. So, the presence or absence of an eruv has a major impact on people with limited mobility and those caring for babies or young children.

There are also other types of eruvin. An eruv techumin, meaning "mixed borders," helps a traditionally observant Jew travel on Shabbat or a holiday. Before the day begins, they prepare food at a location farther than normally allowed, which then permits them to travel to that spot. An eruv tavshilin, or "mixed cooked food items," is prepared at home on the eve of a holiday that falls right before the Sabbath.

It involves placing a cooked item, like a piece of egg, fish, or meat, together with a baked item, such as bread or matzah. While cooking and transferring fire are allowed on holidays (unlike on the Sabbath or Yom Kippur), these activities are only permitted for the holiday itself, not for the next day. This eruv makes it possible to start preparing for the Sabbath before the holiday and to continue those preparations. The foods used in the eruv tavshilin are traditionally eaten on the Sabbath that follows the holiday.