Is it a sin against God to prevent a non-Muslim mother who teaches her children Christianity and practices sorcery from seeing and speaking with her children?

The mother has the primary right to custody, unless one of her conditions for custody is not met, such as apostasy from Islam. The jurists have differed on whether Islam is a condition for the custodian. Some believe it is an essential condition, while others do not stipulate it unless there is a fear for the child's religion. However, they agree on preventing visitation if there is a fear of its harm to the children's religion.