Interdictorum libri
Ex libro IV
Venuleius, Interdicts, Book IV. For there is not much difference between slaves and persons who have not the power to depart at their pleasure.
Venuleius, Interdicts, Book IV. If anyone restrains of his liberty a freeman who is not aware of his own condition, he will still be required to reproduce him, if he fraudulently retains him under his control. 1Trebatius, also, says that anyone who in good faith purchases a freeman as a slave, and retains him under his control, is not liable. 2A man who is free should, at no time, be fraudulently restrained of his liberty, and this is so far true that some authorities hold that not even the least delay should be allowed the person required to produce him, as he is liable to the penalty for an act which has been committed. 3This interdict does not lie in favor of a creditor, for the purpose of producing his debtor in court; for no one is obliged to produce a debtor who conceals himself, but under the Edict of the Prætor his property may be taken in execution.
Venuleius, Interdicts, Book IV. If a son is in the possession of another with his own consent, this interdict cannot be employed, because he is rather in his own possession than in that of him against whom proceedings may be instituted under the interdict, as he has free power to depart or remain; unless there is a dispute between two persons, each of whom alleges that he is his father, and one of whom demands that the child shall be produced by the other.