What is the ruling on attributing a child in official documents only to a Muslim family residing in America for the purpose of fostering him, while breastfeeding him and keeping his original name, because American law does not recognize fostering and mandates adoption, out of fear that the child may be adopted by non-Muslim families, which could lead to the loss of his religion? And is there a religious dispensation for this necessity?

The impermissibility of adoption in Islam is well-known, as are its consequences, such as the loss of lineage and the mixing of kin. If there is a legal necessity that compels registering a child officially under the name of their guardian, then necessities permit what is otherwise forbidden. For instance, if a Muslim orphan is taken in by a Christian family, which would lead to the loss of his religion and morals, then adoption would be the lesser of two evils. If this is the case, the guardian must nullify the effects that Islam has invalidated. For example, he should write or bear witness that the child is not truly his son, observe the Sharia limits in interacting with the child after he grows up, and stipulate in his will what ensures the legal distribution [of inheritance] such that the child's bequeathed share does not exceed one-third.