[UENULEIUS libro octauo actionum. ] §46.5.11.prIn eiusmodi stipulationibus, quae 'quanti ea res est' promissionem habent, commodius est certam summam comprehendere, quoniam plerumque difficilis probatio est, quanti cuiusque intersit, et ad exiguam summam deducitur.
[VENULEIUS, Actions, Book VIII] In stipulations of this kind, which contain a promise of 'whatever the value of the matter is', it is more convenient to include a specific sum, since the proof of how much is at stake for each person is generally difficult, and it is reduced to a small sum.