Exodus 21:11

And if he do not these three unto her
Not the three things last mentioned; though this sense, Aben Ezra says, many of their interpreters give, which is rejected by him, so do some Christian expositors; but these three things are, espousing her to himself, or to his son, or redeeming her by the hand of her father; that is, letting her be redeemed by him, as the Targum of Jonathan; and so Jarchi, Aben Ezra, and Ben Melech: the meaning is, if one or other of these things are not done,

then shall she go out free without money;
be dismissed from her servitude, and not obliged to pay anything for her freedom; the Targum of Jonathan adds, he shall give her a bill of divorce; that is, the son to whom she had been betrothed, and another wife taken by him, and she denied the above things; which favours the first sense.