The slave could purchase his liberty with his peculium by agreement with his master.
He allowed the contubernium of male and female slaves at the price of a money payment from their peculium.
19), which assimilated the position of those so liberated to that of the Latin colonists, under the name of Latini juniores, the person remained in the eye of the law a slave till his death and could not dispose of his peculium.
This of course presupposes the recognition of the right of the slave to his peculium; and the same is implied in Cicero's statement that a diligent slave could in six years purchase his freedom.
The law also favoured in special cases the security of the peculium, though in general principle it still remained the property of the master.