In the case of a debtor who admits that he wrote a promissory note, the creditor is not required to ratify it in court in order to collect the debt, and he can therefore use the document to collect the debt even from liened property that has been sold. In the present case as well, the seller admits that he received the money; therefore the document of sale should enable the buyer to collect his money from liened property.

Rava said to him: Are these cases comparable? There, the matter detailed in the document may be written, as it is a substantive matter; the document attests to true events and it is therefore possible to use the promissory note to collect the debt. But here, the matter detailed in the document may not be written, as the entire sale was not genuine since it was done against the will of the seller. Consequently, this document is completely invalid and cannot be used to collect from liened property.

Mareimar sat and stated this halakha. Ravina said to Mareimar: But if Rava’s answer is accepted, then with regard to that which Rabbi Yoḥanan said concerning an antedated loan document, that there is a rabbinic decree invalidating the document lest he collect from the first date, let us say that there is a better rationale, as Rava stated: The antedated document is invalid, as it may not be written. Mareimar said to him: How can these cases be compared? There, in the case of the antedated document, granted, it may not be written from the first date, but it may be written from the second date. Here, it may not be written at all.

The Gemara further asks: But how does one understand that which is taught in a baraita: What is the case in which one appropriates property for the enhancement of land? It is a case where one robbed another of a field and sold it to another and that buyer enhanced it, and it is appropriated by the court from his possession. When the buyer collects payment from the robber, he collects the principal, i.e., the money he paid for the field itself, even from liened property that the robber had sold in the interim, and he collects the value of the enhancement from the robber’s unsold property. Let us say there also that this illegal sale of the field was a transaction that is may not be written, and therefore he should not be allowed to collect even the principal from liened property.

The Gemara refutes this suggestion: How can these cases be compared? There, in the case of the field purchased from a robber, the deed of sale is meaningful either according to the one who says that it is preferable for the robber not to be called a robber by the buyer, or according to the one who says that it is preferable for the robber to maintain his reliability, i.e., to be considered an honest person; and therefore, the robber will appease the owner of the field by paying him for it and will attempt to ratify his document so that it is valid. But here, where the one who sold the field under duress intends to remove the buyer from it, will he then ratify his document?

MISHNA: One may not set a price with a buyer for the future delivery of produce until the market rate is publicized, as, if he is paid for supplying produce at a later date in advance of the publication of the market rate for that type of produce, he may set a price that is too low. The money paid in advance is deemed a loan, and if the initial payment was lower than the later market value, delivery of the produce will constitute interest on the loan. Once the market rate is publicized, the seller may set a price, even if the produce is not yet in his possession. The reason for this is that even though this one, i.e., the seller, does not have any of the produce, that one, someone else, has it, and the seller could theoretically acquire the produce now at the price he set.

If the seller was first among the reapers, having harvested his crop before the market rate was set, he may set a price with a buyer as he wishes for a stack of grain that is already in his possession, or for a large basket of grapes prepared for pressing into wine, or for a vat [hama’atan] of olives prepared for pressing into oil, or for the clumps [habeitzim] of clay prepared for use by a potter, or for plaster nearing the end of the manufacturing process at the point after he has sunk it, i.e., baked it, in the kiln. Although the market rate has yet to be set, the seller may nevertheless set a price now for their eventual delivery.

The mishna continues: And he may set a price with a buyer for manure on any of the days of the year, as the manure will certainly be available and it is therefore viewed as if it is ready. Rabbi Yosei says: One may set the price of manure only if he already had a pile of manure in his dunghill to which the sale can immediately be applied, but the Rabbis permit it in all cases.

And one may also set a price with a buyer at the highest rate, i.e., a large amount of produce sold for the lowest price, stipulating with the seller that the sale price match the lowest market rate for this product during the course of the year. Rabbi Yehuda says: Even if he did not set a price with him beforehand at the highest rate, the buyer may say to the seller: Give me the produce at this rate or give me back my money. Since he did not formally acquire the produce, if the price changed he may withdraw from the transaction.

GEMARA: Rabbi Asi says that Rabbi Yoḥanan says: One may not set a price for the future delivery of produce at the current market rate because the market is not sufficiently stable. Rabbi Zeira said to Rabbi Asi: Does Rabbi Yoḥanan state this ruling even with regard to the rate of this large central market [dormus]? Rabbi Asi said to him: Rabbi Yoḥanan stated this ruling only with regard to the small-town markets, since their rates are not fixed, as smaller markets have greater sensitivity to fluctuations in price.

The Gemara asks: And according to what we thought initially, that Rabbi Yoḥanan stated this ruling even with regard to this large central market, but then there is a difficulty with the mishna, which teaches: One may not set a price with a buyer for the future delivery of produce until the market rate is publicized. By inference, once the market rate is publicized, one may set a price. If Rabbi Yoḥanan’s ruling applies even to large central markets, how can you find these circumstances? The Gemara answers: The mishna may be speaking about wheat that comes from large warehouses and from ships, as their rate lasts longer, since this merchandise comes to market in very large quantities.

§ The Sages taught: One may not set a price with a buyer for the future delivery of produce until the market rate is publicized. Once the market rate is publicized, the seller may set a price, even if the produce is not yet in his possession. The reason for this is that even though this one, the seller, does not have any of the produce, that one, someone else, has it, and the seller could theoretically acquire the produce now at the price he set. If the new grain was selling at the rate of four se’a for a sela and the old grain was selling at three, one may not set the price according to the price of the new grain until the market rate is publicized both for the new and for the old grain. By the time payment is made, the new grain will not be entirely new and its price will be the same as that of the old grain.

Similarly, if the produce sold by gleaners who gather wheat from various fields, the quality of which is low, is selling at the rate of four se’a of wheat for a sela and that of every other person is selling at the rate of three se’a of wheat for a sela, one may not set a price at the gleaners’ rate until the market rate is publicized both for wheat sold by a gleaner and for wheat sold by an ordinary seller.

Rav Naḥman said: One may set a price for gleaners to deliver produce in the future at the gleaners’ rate. Rava said to Rav Naḥman: What is different about a gleaner, who you hold can immediately set his price at the gleaners’ rate? As, if he has no produce he can borrow it from another gleaner, and therefore it is viewed as though it were in his possession. A homeowner as well should be able to set a price at the gleaners’ rate, as, if he has no grain he can borrow from a gleaner. Rav Naḥman said to him: It is degrading for a homeowner to borrow from a gleaner. Consequently, there is a need to establish a market rate for ordinary sellers. And if you wish, say instead: One who gives money to a homeowner to buy his grain gives the money in return for quality produce, and he does not want the inferior produce the homeowner could borrow from gleaners.

Rav Sheshet says that Rav Huna says: One may not borrow produce based on the market rate, meaning that one may not purchase produce on credit with an agreement to pay for it later at the future market price, even though there is grain sold at this price in another location. Rav Yosef bar Ḥama said to Rav Sheshet, and some say that it was Rav Yosei bar Abba who said to Rav Sheshet: And did Rav Huna say this? But didn’t it occur that the Sages asked Rav Huna: With regard to those students of Torah who borrow food in the month of Tishrei and pay for it in Tevet at the rate in effect then, is this permitted or prohibited? Rav Huna said to them: There is wheat in the town called Hini and there is wheat in the town called Shili, and if the students want to they can buy wheat there and pay the lender immediately, and since they can pay at any time, it is permitted.

The Gemara answers: Initially, Rav Huna thought that one may not borrow produce in this manner, but when he heard that Rabbi Shmuel bar Ḥiyya says that Rabbi Elazar says: One may borrow produce in this manner, he retracted his previously stated opinion and he also said that one may borrow produce in this manner.

The Sages taught: With regard to one who transports a package of goods from one place, where he bought it inexpensively, to another place, where the price is higher, in order to sell it at a profit, and another found him on the way and said to him: Give me the package, and I will pay you in the manner that they pay you in that place to which you are going,