1,052. The Yom Tov Boundary for Coals and Fire

Shvisas Yom Tov 5:15

The yom tov boundary of an ox that belongs to a herder follows the boundary of his city’s residents. The boundary of an ox fattened for slaughter follows the one who bought it with the intention to slaughter it on yom tov; since it was fattened for slaughter, it becomes publicized and many people come to buy its meat. Similarly, if the owner slaughtered a fattened ox on yom tov and sold its meat, each of the buyers may bring the meat wherever they are allowed to go. This is because the owner intended on the day before yom tov that people would come from the suburbs to buy the meat. Consequently, this ox is comparable to a well that was made for the pilgrims to Jerusalem in that it is available to the general public.

Shvisas Yom Tov 5:16

The yom tov boundary of a coal follows its owner and not one who borrows it. A flame, on the other hand, follows the one carrying it. Therefore, if one person lights a lamp or a piece of wood from another person's flame, he may carry it anywhere that he is allowed to go.