Bava Metzia 63A

דמתרצנא מתניתין כוותיה.

as I resolve the Mishnah in accordance with his opinion, expressed in the baraitot he edited.

דתני רבי אושעיא: הרי שהיה נושה בחבירו מנה, והלך ועמד על גורנו ואמר: תן לי מעותי, שאני רוצה ליקח בהן חטין. ואמר לו: חטין יש לי שאני נותן לך, צא ועשאן עלי כשער של עכשיו. הגיע זמן חטין למכור, אמר לו: תן לי חטין, שאני רוצה למוכרן וליקח בהן יין. אמר לו: יש לי יין שאני נותן לך, צא ועשאן עלי כשער של עכשיו.

Rava explains: As R' Oshaya teaches in a baraita: One was owed 100 dinars by another, and he went and stood by the other’s granary and said: Give me my money, as I wish to buy wheat with it, and the other said to him: I have wheat in my granary that I will give you; go and calculate for me the amount to which you are entitled at the current market rate. When the time to sell wheat arrived, the lender said to him: Give me wheat, as I want to sell it and acquire wine with the money received for it. The borrower said to him: I have wine that I will give you; go and calculate for me the amount of wine to which you are entitled at the current market rate.

הגיע זמן יין למכור, ואמר לו: תן לי ייני שאני רוצה למוכרו וליקח בו שמן. אמר לו: שמן יש לי שאני נותן לך, צא ועשהו עלי כשער של עכשיו. כולם, אם יש לו ⁠– מותר. אין לו ⁠– אסור. ומאי ״לקח״⁠ – לקח בהלואתו.

The baraita continues: Then the time to sell wine arrived, and the lender said to the borrower: Give me my wine, as I want to sell it and acquire oil with the money received for it. The borrower said to him: I have oil that I will give you; go and calculate for me the amount of oil to which you are entitled at the current market rate. With regard to all such cases, if the borrower has wine and oil, the transaction is permitted, as this is a proper sale. But if he does not have these items it is forbidden. Since he cannot give him the merchandise at the current moment, if its value appreciates in the interim he is considered to have paid an additional sum for the delay of the repayment of the debt. Rava concludes his explanation: And what is the meaning in the Mishnah of: Acquired? It means that he acquired it as payment for his loan.