[MARCELLUS libro uicensimo primo digestorum. ] §46.8.17.prCum debitore decem creditoris nomine Titius egit: partem petitionis ratam habuit dominus.
[MARCELLUS, Digest, Book XXI] Titius brought an action against a debtor for ten in the name of the creditor; the principal ratified part of the claim.
dicendum est obligationis partem consumptam, quemadmodum si decem stipulatus esset aut exegisset creditorque non totum, sed partem gestae rei comprobasset.
It must be said that part of the obligation is consumed, just as if an agent had contracted for ten or had exacted it, and the creditor had approved not the whole, but part of what was done.
idcirco si ex stipulatu 'decem aut Stichum, utrum ego uoluero' absente me Titius domino quinque petisset, insecuta ratihabitione recte actum uideri.
Therefore, if Titius, in my absence, had claimed five for the principal on the basis of a stipulation 'ten or Stichus, whichever I shall wish', and ratification followed, the action must be seen to have been properly brought.