Deuteronomy 22:30 KJV
A man shall not take his father’s wife, nor discover his father’s skirt.
Deuteronomy 22:30, King James Version
In context
29 Then the man that lay with her shall give unto the damsel’s father fifty shekels of silver, and she shall be his wife; because he hath humbled her, he may not put her away all his days.
30 A man shall not take his father’s wife, nor discover his father’s skirt.