Adopting a child - impact?

Re: Adopting a child - impact?

If a couple adopt a boy he is na mehram to wife and if it is a girl she is na mehram to husband.
i have seen few examples in my family where kid is made mehram through razaiyet.
for example a couple in our extended family adopted a boy so wife’s sister breast fed the baby so now wife is mehram to the boy as she is her razaiy khala.
this baby is the most loved baby in their family.