[MARCELLUS libro singulari responsorum. ] §46.1.24.prLucius Titius cum pro Seio fratre suo apud Septicium interuenire uellet, epistulam ita emisit: 'si petierit a te frater meus, peto des ei nummos fide et periculo meo': post quam epistulam Septicius Seio pecuniam numerauit.
[MARCELLUS in the single book of Responses.] Lucius Titius, wishing to intervene on behalf of his brother Seius with Septicius, sent a letter as follows: 'If my brother requests of you, I ask that you give him money at my credit and risk.' After this letter, Septicius counted out the money to Seius.
deinde Titius inter reliquos et Seium fratrem pro tertia parte reliquit heredem.
Then Titius died, leaving other heirs and his brother Seius as heir for a one-third share.
quaero, an, quia aduersus Seium debitorem Septicii confusa sit actio pro tertia parte, qua Titio fratri suo heres exstitit, cum coheredibus eius agere in solidum possit.
I ask whether, because the action of Septicius against his debtor Seius has been merged for the one-third share by which he stood as heir to his brother Titius, he can bring an action in solidum against Seius's co-heirs.
Marcellus respondit cum coherede Seii non pro maiore quam hereditaria parte mandati agi posse.
Marcellus replied that an action on mandate cannot be brought against a co-heir of Seius for more than their hereditary share.