Leviticus 18:20

18:20 You must not have sexual intercourse with the wife of your fellow citizen to become unclean with her.

Leviticus 25:15

25:15 You may buy it from your fellow citizen according to the number of years since the last jubilee; he may sell it to you according to the years of produce that are left.

Leviticus 19:15

Justice, Love, and Propriety

19:15 “‘You must not deal unjustly in judgment: you must neither show partiality to the poor nor honor the rich. You must judge your fellow citizen fairly.

Leviticus 19:17

19:17 You must not hate your brother in your heart. You must surely reprove your fellow citizen so that you do not incur sin on account of him.

Leviticus 25:14

25:14 If you make a sale to your fellow citizen or buy from your fellow citizen, no one is to wrong his brother.