[PAULUS libro tertio ad edictum. ] §2.14.6.prLegitima conuentio est quae lege aliqua confirmatur.
[PAULUS, On the Edict, book 3] A statutory agreement is one which is confirmed by some law.
et ideo interdum ex pacto actio nascitur uel tollitur, quotiens lege uel senatus consulto adiuuatur.
And therefore, sometimes an action arises or is barred from a pact, whenever it is supported by a law or a decree of the senate.