Is it permissible for a woman to travel without a mahram (a relative one may not marry) for a need?

Question:
The Shaykh: This is a woman residing within the Kingdom, and her father is outside the country. He is currently suffering from a severe illness, and she wants to travel to him, but her husband is unable to travel with her. She asks: Is it permissible for her to travel without a mahram?

Answer:
The Shaykh: By Allah, it is not permissible, due to the generality of the saying of the Messenger (peace and blessings be upon him): two days, except with a mahram. In another narration, it states that she should not travel at all, without specifying a one-day or two-day journey. Therefore, a woman does not travel except with a mahram. She can call her father using communication means, make du'a' (supplication) for him, and send him salam (greetings). Fear Allah as much as you are able. Yes.