Letter 21
Indeed a frequent and consistent complaint screams at us concerning these pontiffs, who, with no thought either for the ancient regulations or the decisions recently arranged by us, do not restrain persons who are obligated and bound by possessions from taking the belt of clerical office. Recently, indeed, the managers of Placidia, the femina illustris, have complained through the presentation of a plaintiff, to the effect that Sabinus, from the city of Marcellianum or Consilinum, taking advantage of the absence of the owner, advanced to the rank of presbyter Antiochus, the legal slave of his mistress, and honoured his brother Leontius with the privilege of clerical office. [...] But because Antiochus cannot at present be restored on account of his priesthood, if he wishes to move to his own church in the office which he has, it should not be restored to him, as it were, but he should hold it for the celebration of the mysteries.
(trans. Neil - Allen 2014: 194, slightly modified)