Leviticus 18:9
You must not have sexual relations with your sister, either your father’s daughter or your mother’s daughter, whether she was born in the same home or elsewhere.
Berean Standard Bible
The nakedness of thy sister, the daughter of thy father, or daughter of thy mother, whether she be born at home, or born abroad, even their nakedness thou shalt not uncover.
“‘You shall not uncover the nakedness of your sister, the daughter of your father, or the daughter of your mother, whether born at home or born abroad.