[IDEM libro quinto ad Plautium. ] §50.17.172.prIn contrahenda uenditione ambiguum pactum contra uenditorem interpretandum est.
[THE SAME, in the fifth book on Plautius.] In contracting a sale, an ambiguous agreement is to be interpreted against the seller.
§50.17.172.1Ambigua autem intentio ita accipienda est, ut res salua actori sit.
However, an ambiguous statement of claim must be so understood that the matter is preserved for the plaintiff.