"If a man has two wives, the one loved and the other disliked, and they have
borne him children, both the loved and the disliked, and if the first-born son is hers that is disliked, then on the day when he
assigns his possessions as an inheritance to his sons, he may not treat the son of the loved as the first-born in
preference to the son of the disliked, who is the first-born, but he shall acknowledge the first-born, the son of
the disliked, by giving him a double portion of all that he has, for he is the
first issue of his strength; the right of the first-born is his.