August 26, 2021 (Being Honest in Business) References

Tanakh
Leviticus 19:13
Leviticus 19:35-36
Leviticus 25:14
Deuteronomy 24:14-15
Deuteronomy 25:15-16
Amos 8:4-7
Proverbs 3:27-28

Halakha
Shulchan Aruch, Choshen Mishpat 336:1

Talmud
Shabbat 31a
Ketubot 50a
Bava Metzia 49b
Bava Metzia 60a
Bava Metzia 110b
Bava Batra 88b
Hullin 94a
Bava Batra 88b
Bava Batra 89a

Books
Mesillat Yesharim, Chapter 11 (Yisrael Salanter)