Gratian, Decretum C.29 q.1-q.2,  Sankt Gallen, Stiftsbibliothek 673, p. 171  (post Cod. 7.6.1.9 [= Nov. 22.11])
Ad hec qui suam ancillam credenti tradit in matrimonium tamquam liberam aut sciens eam duci taceat, ex studio dominium amittit eaque ad ingenuitatem rapitur.  Idem dicitur de servo.

München, Bayerische Staatsbibliothek 22, fol. 154v

The following manuscripts (of those that I have seen) omit "Idem dicitur de servo":  München, Bayerische Staatsbibliothek 3880, fol. 181v, München, Bayerische Staatsbibliothek 28178, fol. 166v, Paris, Bibliothčque nationale de France lat. 4521B, entire authentica is missing,  Paris, Bibliothčque nationale de France lat. 4532, fol. 163v.