Exodus 21:2-4

Revised Standard Version

² When you buy a Hebrew slave, he shall serve six years, and in the seventh he shall go out free, for nothing. ³ If he comes in single, he shall go out single; if he comes in married, then his wife shall go out with him. ⁴ If his master gives him a wife and she bears him sons or daughters, the wife and her children shall be her master’s and he shall go out alone.