Do not take advantage of a brother

[Lorenzo]

Leviticus 19:35

"Don't cheat when measuring length, weight, or quantity. Use honest scales and weights and measures. I am God, your God. I brought you out of Egypt.

[Lorenzo]

"Do not take advantage  of a hired man who is poor and needy, whether he is a brother Israelite or an alien living in one of your towns."

Deuteronomy 24:14

[Lorenzo]

"He who oppresses the poor shows contempt for their Maker, but whoever is kind to the needy honors God." 

Proverbs 14:31