[POMPONIUS libro trigensimo quinto ad Sabinum. ] §18.3.2.prCum uenditor fundi in lege ita cauerit: 'si ad diem pecunia soluta non sit, ut fundus inemptus sit', ita accipitur inemptus esse fundus, si uenditor inemptum eum esse uelit, quia id uenditoris causa caueretur: nam si aliter acciperetur, exusta uilla in potestate emptoris futurum, ut non dando pecuniam inemptum faceret fundum, qui eius periculo fuisset.
[POMPONIUS, On Sabinus, book 35.] When the seller of land has provided in a clause: 'if the money is not paid by the day, let the land be unbought,' it is so understood that the land is unbought only if the seller wishes it to be unbought, because this was provided for the sake of the seller; for if it were understood otherwise, then, if the villa were burned down, it would be in the power of the buyer, by not paying the money, to make the land unbought, which had been at his risk.