Justinian (Institut. l. iii. tit. 23, and Theophil. Vers. Graec. p. 677, 680) has commemorated this weighty dispute, and the verses of Homer that were alleged on either side as legal authorities. It was decided by Paul, (leg. 33, ad Edict. in Pandect. l. xviii. tit. i. leg. 1,) since, in a simple exchange, the buyer could not be discriminated from the seller.