Leviticus 25:14

‎'וכי תמכרו וגו‎‎‎‎ AND IF THOU SELL [OUGHT TO THY FELLOW… YE SHALL NOT OVERREACH ONE ANOTHER] — According to its plain sense the verse intimates what it literally means: (i. e. as translated above). But there is also a Midrashic interpretation: Whence can it be derived that if you sell anything you should sell it to your Israelite fellowman? From what Scripture states: “And if you sell — ,לעמיתך sell it to one associated with you by nationality”. And whence can it be derived that if you intend to buy anything that you should buy it of your Israelite fellow? From what Scripture states “or if thou buy ought — מיד עמיתך, at the hand of one associated with thee, buy it” (Sifra, Behar, Section 3 1). אל תונו YE SHALL NOT WRONG [ONE ANOTHER] — This refers to wronging in money matters (Sifra, Behar, Section 3 4).

And if thou sell aught to thy neighbour, or buy aught of thy neighbour’s hand, you shall not defraud one another:

וְכִֽי־תִמְכְּר֤וּ מִמְכָּר֙ לַעֲמִיתֶ֔ךָ א֥וֹ קָנֹ֖ה מִיַּ֣ד עֲמִיתֶ֑ךָ אַל־תּוֹנ֖וּ אִ֥ישׁ אֶת־אָחִֽיו׃