Is a woman who has been granted an irrevocable divorce sinful for preventing her two daughters (aged 10 and 7) from spending the night at their father's house, while allowing him to see them daily?

Scholars agree that both parents of a minor child have the right to see and visit the child when they separate, and it is not permissible to prevent either parent from seeing or visiting their children. If the mother allows the father to visit, she has fulfilled her obligation, and she is not required to let the children spend the night at his place, especially if she fears potential harm. However, if she permits it, it is permissible, as custody is her right. It is advisable to allow the two daughters to spend the night at their father's place occasionally, if the father is righteous and there is no fear of him corrupting the daughters, in order to avoid dispute and contention.