One West African group, the Ashanti, take dreams so seriously that they would allow a husband to take legal action against another man if that man had an erotic dream about his wife.

 Those Ashanti take their sexual relations pretty serious!

Ashanti people

https://en.wikipedia.org/wiki/Ashanti_people

Law and legal system

Main article: Ashanti law and legal system

In the cataloguing of Ashanti familial and legal systems in R.S. Rattray's Ashanti Law and Constitution Ashanti law specifies that sexual relations between a man and certain women are forbidden, even though not related by blood.^[24] The punishment for offense is death, although it does not carry quite the same stigma to an Ashanti clan as incest.^[24] Sexual relations between a man and any one of the following women is forbidden:^[24]

1. A half-sister by one father, but by a different clan mother;^[24]
2. A father's brother's daughter;^[24]
3. A woman of the same father;^[24]
4. A brother's wife;^[24]
5. A son's wife;^[24]
6. A wife's mother;^[24]
7. An uncle's wife;^[24]
8. A wife of any man of the same "company";^[24]
9. A wife of any man of the same guild or trade;^[24]
10. A wife of one's own slave;^[24]
11. A father's other wife from a different clan.^[24][24]