'Slave's' in the Bible

she told Abraham, "Throw out this slave girl, along with her son, because this slave's son will never be a co-heir with my son Isaac!"

But I will also make a nation of the slave’s son because he is your offspring.”

If the ox gores a male or female slave, he must give 30 shekels of silver to the slave’s master, and the ox must be stoned.

‘If a countryman of yours becomes so poor with regard to you that he sells himself to you, you shall not subject him to a slave’s service.

"If I have rejected my male or female slave's case when their complaint [was] against me,