Is it permissible for the husband to change the tribal name due to the circumstances the family is experiencing, such as the daughters not obtaining birth certificates and their need for vaccinations, and the wife's desire to travel with her daughters to see her sick mother, knowing that the husband is keen not to change the name due to his awareness of the religious punishment for doing so?

It is not permissible for a person to claim lineage to a tribe other than his own, due to the severe warnings established against whoever claims lineage to other than his father. However, if unbearable harm and hardship result for a citizen from not obeying the state, such as imprisonment or prevention from obtaining official documents, then in this case there is no objection to changing that in official papers only out of necessity, while retaining the true lineage.