Chapter: The prohibition of marrying women who are permanently unmarriageable through blood or marital kinship.

It is unlawful for anyone to marry his mother or any of his grandmothers—whether on his father’s side or his mother’s side, however far back they go. Likewise, no one may marry his daughter, or any woman descended from his daughters or his sons, no matter how many generations below. Equally impermissible is marrying one’s sister, or any woman descended from one’s brothers or sisters, however remote the degree. He is also forbidden to marry his paternal aunt, or the aunt of that aunt, however high the lineage climbs, and the same applies to his maternal aunt and the aunt of that aunt, however far up the family line.