Digestorum libri
Ex libro XC
Dig. 1,3,11Idem libro LXXXX digestorum. Et ideo de his, quae primo constituuntur, aut interpretatione aut constitutione optimi principis certius statuendum est.
Dig. 16,2,2Iulianus libro nonagensimo digestorum. Unusquisque creditorem suum eundemque debitorem petentem summovet, si paratus est compensare.
Ad Dig. 16,2,2ROHGE, Bd. 8 (1873), S. 43: Zulässigkeit der Compensation von Gegenforderungen, obschon über letztere bereits quittirt ist, sofern die Quittung die Art der Tilgung nicht ergibt und behauptet wird, daß dieselbe nicht durch Zahlung, sondern durch Aufrechnung geschehen ist.Julianus, Digest, Book XC. Any one can bar his creditor, who is also his debtor, when he brings an action against him if he is prepared to set off his claim.
Dig. 46,1,18Idem libro nonagensimo digestorum. Qui debitorem suum delegat, pecuniam dare intellegitur, quanta ei debetur: et ideo si fideiussor debitorem suum delegaverit, quamvis eum, qui solvendo non erat, confestim mandati agere potest.
Ad Dig. 46,1,18Windscheid: Lehrbuch des Pandektenrechts, 7. Aufl. 1891, Bd. II, § 412, Note 17.The Same, Digest, Book XC. He who delegates his debtor is understood to pay as much money as is due to him; and therefore, if a surety delegates his debtor, even though he may not be solvent, an action on mandate can immediately be brought.