[IDEM libro quarto quaestionum. ] §45.1.116.prDecem stipulatus a Titio postea, quanto minus ab eo consequi posses, si a Maeuio stipularis, sine dubio Maeuius uniuersi periculum potest subire.
[THE SAME, book four of Questions.] If, after having stipulated for ten from Titius, you subsequently stipulate from Maeuius for how much less you might be able to obtain from him, Maeuius can undoubtedly undergo the risk of the whole amount.
sed et si decem petieris a Titio, Maeuius non erit solutus, nisi iudicatum Titius fecerit.
But even if you sue Titius for the ten, Maeuius will not be released unless Titius satisfies the judgment.
PAULUS notat: non enim sunt duo rei Maeuius et Titius eiusdem obligationis, sed Maeuius sub condicione debet, si a Titio exigi non poterit: igitur nec Titio conuento Maeuius liberatur (qui an debiturus sit, incertum est) et soluente Titio non liberatur Maeuius (qui nec tenebatur), cum condicio stipulationis deficit, nec Maeuius pendente stipulationis condicione recte potest conueniri: a Maeuio enim ante Titium excussum non recte petetur.
PAULUS notes: for Maeuius and Titius are not two co-promisors of the same obligation, but Maeuius owes under a condition, 'if it cannot be exacted from Titius'; therefore, Maeuius is neither released by Titius being sued (for it is uncertain whether he will owe), nor is Maeuius (who was not even bound) released when Titius pays, since the condition of the stipulation fails; nor can Maeuius be rightfully sued while the condition of the stipulation is pending, for he will not be rightfully sued before Titius has been exhausted.