What is the ruling on compelling a father to obligate his son to maintain ties of kinship with a divorced mother who has a bad reputation, she and her family, knowing that the father married her after committing adultery with her and had children with her, then divorced her, and she is not from the same country as the father, bearing in mind that the father's country's law does not permit marriage to non-citizens?

If the questioner is asking about the ruling concerning his relationship with a child born from an illicit relationship with the mother before marrying her, then the child is considered his legitimate son if born after the marriage contract and after the minimum period of gestation (six months) has passed. All rights of children upon their fathers are obligatory for him. If there is a law prohibiting marriage to a foreign woman, the violation is a legal one for which the questioner is responsible, but it does not absolve him of his Islamic duties towards his child and his mother.