Leviticus 20:14

20:14 "'If a man takes a wife and her mother, it is wickedness: they shall be burned with fire, both he and they; that there may be no wickedness among you.
-World English Bible

Other Translation

20:14 And if a man take a wife and her mother, it [is] wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you.
-King James Version