[ULPIANUS libro quadragensimo quinto ad Sabinum. ] §46.3.22.prFilius familias patre inuito debitorem eius liberare non potest: adquirere enim obligationem potest, deminuere non potest.
[ULPIANUS in the forty-fifth book on Sabinus.] A son under paternal authority cannot, against his father's will, release his father's debtor; for he can acquire an obligation, but he cannot diminish it.