Is it permissible, Islamically, for a wife to breastfeed an adopted baby girl (seven months old) so that her husband becomes the baby's father through suckling, and his brother becomes her paternal uncle, making it permissible for her to reside with them in the house, and how many breastfeedings are required for that?

Adoption is forbidden due to the corrupting consequences it entails, whereas caring for a child in need is an act of righteousness. If a baby girl is breastfed five times within her first two years of life, she becomes a daughter to the wet nurse and the owner of the milk (the wet nurse's husband), and his brother becomes her paternal uncle through rada'ah (milk kinship). As for breastfeeding after two years, it holds no legal validity.