1)

(a)We learned in a Beraisa that for the first three days after a person has declared his field Hefker, he is able to retract. What if someone else acquired it first?

(b)Why did Chazal institute the basic Takanah of being able to retract (verbally) from Hefker?

(c)Why did they extend this concession even when someone else has already acquired the field (when the reason for the Takanah no longer applies)?

(d)Why did they then limit the decree to three days? Why is the Hefker fully valid after that?

2)

(a)What does the Seifa of the Beraisa rule in a case where the owner declared his field Hefker for a day, a week, a month, a year or a cycle of seven years?

(b)Initially, we establish the Reisha like the Rabanan, and the Seifa, like Rebbi Yosi'. How do we currently explain Rebbi Yosi? Why does he forbid the Mudar to benefit from the food that the Madir declared Hefker in our Mishnah?

(c)What would Rebbi Yosi say in the Reisha? With which point does he disagree with the Rabanan?

(d)And what would the Rabanan say in the Seifa? With which point do they disagree with Rebbi Yosi?

3)

(a)Seeing as, according to Rebbi Yosi, the owner can retract even in a case of Hefker which is not limited to any specific time, why did he restrict his case to when it is?

(b)What are the ramifications of the statement of Rebbi Yosi that, even if he himself acquires it from Hefker, he can no longer retract?

(c)Why should he not be obligated to Ma'aser the produce, seeing as it remains in his domain until someone else acquires it?

(d)On what grounds do Ula and Resh Lakish disagree with this explanation, despite the fact that everything fits so nicely into place?

4)

(a)According to Ula, the author of the entire Beraisa is the Rabanan. Why is it then, that in the Seifa, the owner can retract even after three days?

44b----------------------------------------44b

5)

(a)According to Resh Lakish, the author of the entire Beraisa is Rebbi Yosi. Then why, in the Reisha, can the owner not retract after three days?

(b)Why did they not then extend the decree to the first three days?

(c)What prompted the Rabanan to issue such a decree? What problem might it cause if the owner could retract even after three days, according to Rebbi Yosi?

6)

(a)In the previous case, even after the three days, seeing as the owner is able to retract, according to Din Torah, it turns out that the field is not really Hefker at all. Now that Chazal decreed that it is, does it mean that the Chiyuv T'rumos and Ma'asros no longer exists?

(b)What problem does this cause?

(c)So what did Chazal do to circumvent this problem?

7)

(a)The Beraisa discusses the Din of someone who declares his field Hefker regarding Peret, Olelos, Shichechah, Pe'ah and Ma'asros. What is ...

1. ... 'Peret'?

2. ... 'Olelos'?

(b)Is someone who declares his field Hefker, obligated to leave Peret and Olelos in his vineyard and Shichechah and Pe'ah in his field, or to separate Ma'asros?

(c)Does he remain Patur from separating Ma'asros after he re-acquires it?

(d)Then why is he obligated to leave Peret, Olelos, Shichechah and Pe'ah?

8)

(a)How will Ula (who learned above that, according to the Rabanan, within three days of declaring one's field Hefker, the owner may retract), explain the above Beraisa? Why does the Tana exempt the owner who does so from Ma'asros?

(b)Resh Lakish established the Beraisa above (which authorized the owner to retract within three days) like Rebbi Yosi. Is it possible, according to Resh Lakish in Rebbi Yosi, for the owner to be exempt from Ma'asros should he re-acquire his field within three days?

(c)Considering then, that the Tana does not require the owner to specify that he is acquiring the field from Hefker, how will Resh Lakish explain the Beraisa?