[PAULUS libro decimo ad Sabinum. ] §3.5.39.prSi communes aedes tecum habeam et pro tua parte damni infecti uicino cauero, dicendum est quod praestitero negotiorum gestorum actione potius quam communi diuidundo iudicio posse me petere, quia potui partem meam ita defendere, ut socii partem defendere non cogerer.
[PAULUS, On Sabinus, Book X] If I should have a building in common with you, and on behalf of your share I provide security to a neighbor against threatened damage, it must be said that I can claim what I have paid by an action on business transacted rather than by an action for dividing common property, because I was able to protect my own share in such a way that I would not be forced to protect my partner's share.