ANSWER:

If the child is below 2 years of age and he or she suckles 5 or more meals, this is permissible and it makes him/her a child of that woman whether she is your sister or any other woman.

QUESTION: A sisters asks is it permissable to purposely allow her child to suckle from her sister (baby’s aunty) in order to make the baby mahram with her own cousins (aunty’s children) and uncle (aunty’s husband)