In Eastern Christianity Weisner-Hanks mentions the introduction in the fifteenth century of prohibitions in the Christian
Canon Law, in which one is not allowed to marry any one suspected to be of respective kin. Individuals who shared godparents, and great grandparents were prohibited against marrying. The prohibitions against marriage also extended to that of natural godparents. This was because both natural and 'foster' or 'spiritual' parents had an investment on the child's spiritual well being, which would not be achieved by going against Canon Law. Iranians seemed to have "taken care to confine delegated suckling to subordinate non-kin – particularly those with whom marriage would be undesirable in any event".
In Islamic societies In the
early modern period, milk kinship was widely practiced in many Arab countries for both religious and strategic purposes. Like the Christian practice of
godparenting, milk kinship established a second family that could take responsibility for a child whose biological parents came to harm. "Milk kinship in Islam thus appears to be a culturally distinctive, but by no means unique, institutional form of adoptive The childhood of the Islamic prophet,
Muhammad, illustrates the practice of traditional Arab milk kinship. In his early childhood, he was sent away to foster-parents amongst the
Bedouin. By nursing him,
Halimah bint Abdullah became his "milk-mother". The rest of her family was drawn into the relationship as well: her husband al-Harith became Muhammad's "milk-father", and Muhammad was raised alongside their biological children as a "milk-brother". == See also ==