[POMPONIUS libro uicesimo ad Sabinum. ] §45.1.25.prSi dari stipuler id quod mihi iam ex stipulatu debeatur, cuius stipulationis nomine exceptione tutus sit promissor, obligabitur ex posteriore stipulatione, quia superior quasi nulla sit exceptione obstante.
[POMPONIUS, in the twentieth book on Sabinus.] If I stipulate for the giving of that which is already owed to me under a stipulation, in respect of which prior stipulation the promisor is protected by an exception, he will be bound under the subsequent stipulation, because the former is, as it were, null, since an exception stands in the way.