[PAULUS libro trigensimo secundo ad edictum. ] §17.1.3.prPraeterea in causa mandati etiam illud uertitur, ut interim nec melior causa mandantis fieri possit, interdum melior, deterior uero numquam.
[PAULUS in the thirty-second book on the Edict.] Furthermore, in the matter of mandate this point also is involved, that sometimes the position of the mandator cannot be made better, sometimes it can be made better, but indeed never worse.
§17.1.3.1Et quidem si mandaui tibi, ut aliquam rem mihi emeres, nec de pretio quicquam statui tuque emisti, utrimque actio nascitur.
And indeed, if I commissioned you to buy a certain thing for me, and I did not fix anything as to the price, and you bought it, an action arises on both sides.
§17.1.3.2Quod si pretium statui tuque pluris emisti, quidam negauerunt te mandati habere actionem, etiamsi paratus esses id quod excedit remittere: namque iniquum est non esse mihi cum illo actionem, si nolit, illi uero, si uelit, mecum esse.
But if I fixed a price and you bought it for more, some have denied that you have an action on the mandate, even if you were prepared to remit the excess; for indeed it is unfair that I should not have an action against him if he is unwilling, but that he, if he is willing, should have one against me.