Our sick mother insists that our sister travel to her, even without a mahram?

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: Our mother insists that our sister travel to her, knowing that she will travel by plane without a mahram, and she will be received by

Answer:
There is no obedience to a created being in disobedience to the Creator. It is not permissible for a woman who believes in Allah and the Last Day to travel unless she has a mahram with her. So she should not obey her mother or her sister. If a mahram comes for her, she travels; otherwise, she stays, and she is excused by the Shari'ah. Yes.