(Mishnah): If someone brings up fruit from the Galil to Yehuda or he goes up to Yerushalayim, he may eat them until he reaches his destination and similarly if he returns (backtracking before reaching his destination).

(R. Meir): Until he reaches the place that he will be spending Shabbos.

Peddlers who travel around cities may eat until they reach the place where they will be sleeping overnight.

(R. Yehuda): The first house that he reaches is considered his house (for the obligation to tithe).

(Gemara): If fruits were not picked for Shabbos use and Shabbos arrived...

(R. Yochanan): Shabbos makes it Tevel.

(R. Shimon ben Lakish): Shabbos does not make it Tevel.

Question (R. Shimon ben Lakish to R. Yochanan): (Our) Mishnah taught - 'If someone brings up fruit from the Galil to Yehuda or he goes up to Yerushalayim, he may eat them until he reaches his destination and similarly if he returns.' And a Baraisa taught that this is even if he slept the night on the way or even if Shabbos arrived...?

Answer (R. Yochanan): The Baraisa means that if he intends to spend Shabbos somewhere (and Shabbos hasn't yet arrived, he is permitted all the way until Shabbos, when he becomes prohibited).

(Proof): The Baraisa teaches "if he intends to spend Shabbos, on a Monday''. Does a person spend Shabbos on a Monday?! Rather, it must mean when he wishes to spend the next few days there until Shabbos.

Question: All agree that sleeping the night doesn't obligate. What's the difference between spending the night and spending Shabbos?

Answer: A person views sleeping the night lightly but doesn't view spending Shabbos lightly - a person would sleep anywhere, but wouldn't just spend Shabbos anywhere.

Question (Tosefta): R. Yehoshua once went (with his students) to learn Torah from R. Yochanan ben Zakkai in Bror Chayil and the people of those towns were bringing him fruits. (The students asked R. Yehoshua if they must separate from the fruits as Demai.) R. Yehoshua told them, "If we sleep the night here, we are obligated to tithe; and if not, we are not obligated.'' (This shows that sleeping the night establishes an obligation?)

Answer (R. Zeira): R. Yehoshua's mind was clear (and he would only stay in good accommodations. Therefore, when he slept the night, it would establish an obligation.)

Question (R. Mana to R. Zeira): Are everyone else fools (that sleep anywhere)?!

Rather, R. Yehoshua was different because he had people to arrange his lodgings wherever he went, so where he stayed was considered like his home and obligated; which is not the case for others.

Question (Our Mishnah): Peddlers who travel around cities may eat until they reach the place where they will be sleeping overnight.

Rebuttal: The place where they will be sleeping refers to their own homes.

(R. Shimon ben Lakish citing R. Hoshiyah): (Disagrees) The Mishnah refers to people such as the peddlers of Kfar Chananya, who have a fixed place to sleep while they go to four or five villages to sell their merchandise. (But if a peddler has no fixed place at all to sleep, his accommodations do not establish an obligation to tithe.)

(The Mishnah taught that R. Yehuda says that the first house that he reaches is considered his house (for the obligation to tithe). R. Chalafta ben Shaul taught that it's because a person wishes to leave all of his items and sleep in the first house he reaches.