The Code of Hammurabi

And if the father in his lifetime, to the sons which the maidservant bore him, has not said 'my sons,' after the father has gone to his fate the sons of the maid shall not share with the sons of the wife in the goods of the father's house, one shall assign the maidservant and her sons freedom; the sons of the wife shall have no claim on the sons of the maidservant for servitude, the wife shall take her marriage portion and the settlement which her husband gave her and wrote in a deed for her and shall dwell in the dwelling of her husband, as long as lives she shall enjoy, for money she shall not give, after her they are her sons' forsooth.