[IAUOLENUS libro septimo ex Cassio. ] §18.1.63.prCum seruo dominus rem uendere certae personae iusserit, si alii uendidisset, quam cui iussus erat, uenditio non ualet: idem iuris in libera persona est: cum perfici uenditio non potuit in eius persona, cui dominus uenire eam noluit.
[JAVOLENUS, From Cassius, Book VII] When a master has ordered his slave to sell a thing to a certain person, if he has sold it to someone other than the one he was ordered to, the sale is not valid; the same rule of law applies in the case of a free person, since the sale could not be completed in the person of one to whom the master did not wish it to be sold.
§18.1.63.1Demonstratione fundi facta fines nominari superuacuum est: si nominentur, etiam ipsum uenditorem nominare oportet, si forte alium agrum confinem possidet.
Once the identification of the land has been made, it is superfluous to name the boundaries; if they are named, it is necessary to name even the seller himself, if by chance he possesses another neighboring field.