Yosef Karo

“ Paragraph 17 - If someone has fruit stored in a far city, and the residents of that city made an eruv in order to come to him, they should not bring from his fruits, as his fruits are treated like him. ”

“ Paragraph 3 - Just as no man is permitted to walk further than two thousand amot in any direction on Shabbat and holidays, it is the same with their animals and things; no person is permited to take them outside of the two thousand amot of their owner. If the owner made an eruv in one direction, no person is permitted to take them in a different direction, even one step outside of the area in which the owners can walk. ”

“ Paragraph 13 - If someone took a coal from his friend on a holiday, he can only take it as far as the giver can go. However, if he lit a candle or wood from his friend's flame, it is treated like the feet of the lighter.
סעיף יג - לקח מחברו ביום טוב גחלת, לא יוליכנה אלא כרגלי הנותן. אבל אם הדליק נר או עץ משלהבת חברו, הרי הוא כרגלי זה שהדליק.
Paragraph 14 - An individual's water pit is treated like the feet of its owner. A city's is treated like the feet of the people of the city. One that is ownerless is treated like the feet of he who draws from it. ”