[IDEM libro sexto digestorum. ] §12.6.48.prQui promisit, si aliquid a se factum sit uel cum aliquid factum sit, dare se decem, si, priusquam id factum fuerit, quod promisit dederit, non uidebitur fecisse quod promisit atque ideo repetere potest.
[THE SAME, in the sixth book of the Digests.] A person who promised that he would give ten if something were done by him or when something should be done, if, before that thing is done, he has given what he promised, will not be deemed to have performed what he promised, and therefore he can recover it.