[PAULUS libro trigesimo sexto ad edictum. ] §25.1.4.prEt in totum id uidetur necessariis impensis contineri, quod si a marito omissum sit, iudex tanti eum damnabit, quanti mulieris interfuerit eas impensas fieri.
[PAULUS, On the Edict, book 36] On the whole, that is deemed to be contained in necessary expenses, which, if it has been omitted by the husband, the judge will condemn him to pay as much as it would have been of interest to the woman that those expenses be made.
sed hoc differt, quod factarum ratio habetur, etsi res male gesta est, non factarum ita, si ob id res male gesta est: itaque si fulserit insulam ruentem eaque exusta sit, inpensas consequitur, si non fecerit, deusta ea nihil praestabit.
But there is this difference: that account is taken of those expenses incurred even if the matter turned out badly, but of those not incurred only if the matter turned out badly on that account. Therefore, if he has propped up a ruinous apartment building and it has been burnt down, he recovers the expenses; but if he did not do so, he will pay nothing even if it was burnt down.