Unemancipated slaves, at the death of their master, become the property of his heirs; and when an emancipated slave dies, leaving no male descendants or collateral relations, the master is the heir; or, if the master be dead, his heirs inherit the slave's property. As a slave enjoys less advantages than a free person, the law in some cases ordains that his punishment for an offence shall be half of that to which the free is liable for the same offence, or even less than half: if it be a fine or pecuniary compensation, it must be paid by the owner to the amount, if necessary, of the value of the slave, or the slave must be given in compensation. When a man, from being the husband, becomes the master, of a slave, the marriage is dissolved, and he cannot continue to live with her but as her master, enjoying, however, all a master's privileges, unless he emancipates her, in which case he may again take her as his wife with her consent. In like manner, when a woman, from being the wife, becomes the possessor, of a slave, the marriage is dissolved, and cannot be renewed unless she emancipates him, and he consents to the re-union. Complete and immediate emancipation is sometimes granted to a slave gratuitously, or for a future pecuniary compensation. It is conferred by means of a written document, or by a verbal declaration (expressed in the words, "Thou art free," or some similar phrase) in the presence of two witnesses, or by returning the certificate of sale obtained from the former owner. Future emancipation is sometimes covenanted to be granted on the fulfilment of certain conditions, and more frequently to be conferred on the occasion of the owner's death. In the latter case the owner cannot sell the slave to whom he has made this promise: and, as he cannot alienate by will more than one-third of the whole property that he leaves, the law ordains that if the value of the said slave exceeds that portion, the slave must obtain and pay the additional sum. When a female slave has borne a child to her master, and he acknowledges the child to be his own, he cannot sell this slave, and she becomes free on his death.