Exodus 22:25

25 aIf you lend money to any of my people with you who is poor, you shall not be like a moneylender to him, and you shall not exact interest from him.

Leviticus 19:10

10And you shall not strip your vineyard bare, neither shall you gather the fallen grapes of your vineyard. You shall leave them for the poor and for the sojourner: I am the Lord your God.

Deuteronomy 24:12

12And if he is a poor man, you shall not sleep in his pledge.
Copyright information for ESV