[If] one brings up produce from Galilee to Judea, or goes up to Jerusalem, he may eat from it until he reaches the place to which he is going; and so, too, upon returning. R' Meir says: [He may eat of the produce only] until he reaches the place where he will spend the Sabbath.  And peddlers who circulate in towns may eat until they reach [their] place of lodging. R' Yehudah says: The first house [in the town] is [considered] his house.