1. The Mishnah discusses the law of a person who said that he is selling "a Beis Kor that is within these borders."
2. There is a dispute about a case where it is exactly one sixth less than a Beis Kor.
3. The Gemara discusses the case of a seller who tells a buyer that his property is a certain size, and it turns out that it is smaller.
4. The Gemara explains the meaning of the seemingly erroneous measurement given by the seller.
5. If an inheritance is divided by drawing lots to determine who receives which portion, once the lot is drawn the division is final.
A BIT MORE
1. The Mishnah says that the buyer is not compensated if the amount is up to one sixth less than a Beis Kor. If it is more than one sixth less than a Beis Kor, the seller must compensate the buyer.
2. Rav Huna: The law of less than one sixth applies; i.e., the buyer is not compensated. Rav Yehudah: The law of more than one sixth applies.
3. If the buyer was familiar with the property and its borders, and it was merely mentioned as a fact that it was a certain size, the buyer has no claim. This is because he knew the property and did not make the sale dependent on how large the property was.
4. When he said it was a certain size, larger than it actually was, he meant that it is as valuable and special as a property of that size, not that it is actually that size.
5. This is similar to the division of Eretz Yisrael that was done by drawing lots.