Study Bava Metzia folio 45A with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
It is prohibited for one to borrow a dinar and repay the loan with a dinar, because if the value of the dinar changes in the interim, both the borrower and the lender will have violated the prohibition against interest.
The Talmud elaborates: The reference is to a dinar of what type of metal? If we say the reference is to one who borrowed a silver dinar and repaid the loan with a silver dinar, is there anyone who says that silver relative to itself is not currency? Rather, it is obvious that the reference is to on
The Talmud rejects this proof: No, actually I will say to you that it is R' Yoḥanan who said that even according to Beit Shammai we desacralize produce with gold dinars. And the halakha of a loan is different from the halakha of desacralizing second tithe, as with regard to buying and selling, the r
The Talmud comments: So too, it is reasonable to say that this is R' Yoḥanan’s opinion, as when Ravin came from Eretz Yisrael he said that R' Yoḥanan says: Even though they said that it is prohibited to borrow a gold dinar and repay the loan with a gold dinar, yet, one may desacralize second tithe w
Apropos redemption of second-tithe produce with gold, the Talmud cites proof from a Mishnah (Ma’aser Sheni 2:8). Come and hear: With regard to one who exchanges copper coins of second-tithe money for a silver sela coin to ease its transport to Jerusalem, Beit Shammai say: He may exchange the coppe