Theses de iureiurando propter calumniam dando

XXV.
A proctor appointed for business, if the principal cannot appear in court for a just cause, demands this oath himself from the adversary.

XXVI.
Finally, freedmen, because of the respect owed, cannot demand the oath of calumny from their patrons. These are the persons who may or may not seek this oath.

XXVII.
This oath can similarly be demanded and provided by those who can sue and defend in court either in their own name or in the name of another.

XXIIX.
The principal parties sue and defend in their own name, that is, the plaintiff and the defendant, whose case is being argued in the courts; for this reason, they themselves must provide the oath of calumny, unless they are either explicitly prohibited or are exempt from it.

XXIX.
Others are prohibited from providing the oath by nature, such as infants, the mad, the mentally incapacitated, and those who are both mute and deaf.

XXX.
Others are prohibited by law, such as those under puberty, spendthrifts, those under 25 years of age, and those excommunicated by Canon Law.

XXXI.
Ecclesiastical persons are exempt from the oath of calumny, because it would be shameful to suspect of them that they would speak falsely or commit calumny.

XXXII.
So also, patrons are free from this oath; because the owed respect does not permit that they be called by freedmen into suspicion of calumny.