[POMPONIUS libro uicesimo primo ad Sabinum. ] §19.5.26.prSi tibi scyphos dedi, ut eosdem mihi redderes, commodati actio est: si, ut pondus argenti redderes quantum in illis esset, tantidem ponderis petitio est per actionem praescriptis uerbis, tam boni tamen argenti, quam illi scyphi fuerunt: sed si ut uel hos scyphos uel ut eiusdem ponderis argentum dares, conuenit, dicendum est, si quidem tua est electio, scyphos statim tuos fieri et te mihi dare aut scyphos aut argentum utrum malis: quod si mihi permissum est eligere, scyphi tui non fient antequam dixero me eos habere nolle.
[POMPONIUS, in the twenty-first book on Sabinus.] If I gave you cups so that you would return the same ones to me, there is an action on loan; if, so that you would return a weight of silver equal to what was in them, there is a claim for the same weight by an action with prescribed words, of silver, however, as good as those cups were; but if it was agreed that you should give either these cups or silver of the same weight, it must be said that, if indeed the choice is yours, the cups immediately become yours and you must give me either the cups or the silver, whichever you prefer; but if the choice is permitted to me, the cups will not become yours before I have said that I do not want to have them.
§19.5.26.1Quod kalendis [Ianuariis?] dari solet medicis et artificibus, non est merces: itaque si quid in hisce ministeriis aliter fiat quam conuenit, non ex locato, sed in factum actio dabitur.
What is accustomed to be given to physicians and artisans on the Kalends [of January?] is not wages; therefore, if anything in these services is done otherwise than agreed, an action will be given not on lease, but on the facts.