Mambo ya Walawi 18 : 18 Leviticus chapter 18 verse 18

Wala usitwae mwanamke pamoja na nduguye, awe mtesi wake, na kufunua utupu wake, huyo wa pili atakapokuwa yu hai.
soma Mlango wa 18

"'You shall not take a wife to her sister, to be a rival, to uncover her nakedness, while her sister is yet alive.