Leviticus 25:39
If a countryman among you becomes destitute and sells himself to you, then you must not force him into slave labor.
Berean Standard Bible
And if thy brother that dwelleth by thee be waxen poor, and be sold unto thee; thou shalt not compel him to serve as a bondservant:
“‘If your brother has grown poor among you, and sells himself to you, you shall not make him to serve as a slave.