Here "brother" means an Israelite in general, whether a male or female. Alternate translation: "If a fellow Israelite" or "If a fellow Hebrew" (See: [[rc://en/ta/man/translate/figs-gendernotations]])
If a person could not repay their debts, they sometimes sold themselves into slavery to pay what they owed. This can be stated in active form. Alternate translation: "sell themselves to you" (See: [[rc://en/ta/man/translate/figs-activepassive]])