Getting married to one's foster sisters brother

Q: I am writing to seek your guidance on a family matter concerning marriage eligibility in Islam. 

I am considering the possibility of proposing marriage between my daughter and her first cousin from mother side. However, there is a specific detail that we need to clarify: the boy's younger sister is also our daughter's radaai sister (sister through breastfeeding). 

Given this relationship, I am unsure if it is permissible for my daughter to marry her cousin. Could you please provide clarity on this matter according to Islamic principles?

A: Nikaah between the both is permissible. The boy's younger sister being the foster-sister of the girl will not affect the nikaah in any way.

And Allah Ta'ala (الله تعالى) knows best.

 

Answered by:

Mufti Zakaria Makada

Checked & Approved:

Mufti Ebrahim Salejee (Isipingo Beach)