[SCAEUOLA libro secundo quaestionum. ] §16.2.22.prSi debeas decem aut hominem, utrum aduersarius uolet, ita compensatio huius debiti admittitur, si aduersarius palam dixisset, utrum uoluisset.
[SCAEVOLA, Questions, Book II.] If you owe ten or a slave, whichever the opponent wishes, the set-off of this debt is admitted only if the opponent had openly declared which one he had wished.