Is it permissible for the custodial mother to travel with the children to her country without the father's knowledge and consent?

Custody of children after divorce is the mother's right, but on condition that she does not travel a journey of relocation away from the father's place of residence. If she travels a journey of relocation, then the father has more right to custody. As for temporary travel for a need, it does not forfeit her right to custody; rather, she takes the child with her. Scholars have differed regarding travel for a need: some hold that the child remains with the parent who is a resident, while others hold that the custodian may travel with the child if the travel is safe.