[PAPINIANUS libro secundo quaestionum. ] §2.15.17.prUenditor hereditatis emptori mandatis actionibus cum debitore hereditario, qui ignorabat uenditam esse hereditatem, transegit: si emptor hereditatis hoc debitum ab eo exigere uelit, exceptio transacti negotii debitori propter ignorantiam suam accommodanda est.
[PAPINIANUS in the second book of Questions.] The seller of an inheritance, after assigning the actions to the buyer, made a compromise with an inheritance debtor who did not know that the inheritance had been sold: if the buyer of the inheritance wishes to demand this debt from him, the plea of a transaction concluded must be granted to the debtor on account of his ignorance.
idem respondendum est et in eo, qui fideicommissam recepit hereditatem, si heres cum ignorante debitore transegit.
The same answer must be given also in the case of one who has received a trust-inheritance, if the heir has made a compromise with a debtor who was ignorant of it.