[ULPIANUS libro quadragensimo octauo ad Sabinum. ] §45.3.13.prCum enim stipulatur domino aut extraneo seruus, utrumque consistet et in domini persona stipulatio et in extranei solutio: at hic τὸ ἰσάζον corrumpit stipulationem et solutionem.
[ULPIAN, from the forty-eighth book on Sabinus.] For when a slave stipulates "for his master or for a stranger", both will stand, namely, the stipulation in the person of the master and the payment in the person of the stranger; but here the equivalence ruins both the stipulation and the payment.