[PAULUS libro quarto ad Sabinum. ] §15.1.8.prNon statim quod dominus uoluit ex re sua peculii esse, peculium fecit, sed si tradidit aut, cum apud eum esset, pro tradito habuit: desiderat enim res naturalem dationem.
[PAULUS libro quarto ad Sabinum.] A master does not immediately make into a peculium that which he wished to belong to the peculium out of his own property, but only if he has delivered it or, if it was already with the slave, has held it as delivered; for the matter requires a natural delivery.
contra autem simul atque noluit, peculium serui desinit peculium esse.
On the other hand, as soon as he does not want it to be, the slave's peculium ceases to be a peculium.