And if a man sell his daughter to be a maidservant, she shall not go out as the menservants do.
All Commentaries on Exodus 21:7 Go To Exodus 21
George Leo Haydock
AD 1849
Go out, to work in the fields, according to Grotius; or rather, to enjoy her liberty. A father who sold his daughter, always expected that she should be the wife of the purchaser, or of his son. If this did not take place, she was free after six years, or before, if her master died. Constantine sanctioned the power of the Romans to sell their children. The Phrygians and Thebans had the like custom. (Calmet)