[GAIUS libro trigensimo ad edictum prouinciale. ] §44.2.15.prSi inter me et te controuersia de hereditate sit et quasdam res ex eadem tu possides, quasdam ego: nihil uetat et me a te et inuicem te a me hereditatem petere.
[GAIUS, on the provincial edict, book thirty.] If there is a dispute between me and you concerning an inheritance, and you possess certain things from the same, and I certain others: nothing prevents both me from claiming the inheritance from you, and in turn you from me.
quod si post rem iudicatam a me petere coeperis, interest, utrum meam esse hereditatem pronuntiatum sit an contra: si meam esse, nocebit tibi rei iudicatae exceptio, quia eo ipso, quod meam esse pronuntiatum est, ex diuerso pronuntiatum uidetur tuam non esse: si uero meam non esse, nihil de tuo iure iudicatum intellegitur, quia potest nec mea hereditas esse nec tua.
But if, after the matter has been decided, you begin to claim it from me, it makes a difference whether it has been pronounced that the inheritance is mine, or the contrary: if it was pronounced to be mine, the exception of res judicata will bar you, because by that very fact, that it was pronounced to be mine, on the other hand it is deemed to have been pronounced that it is not yours; but if it was pronounced not to be mine, it is understood that nothing has been decided concerning your right, because it is possible that the inheritance is neither mine nor yours.