The ruling on a woman traveling without a mahram?

Question:
This is a question about the mahram for a woman in travel. The mahram for a woman in travel is necessary; it is not permissible for her to travel except with a mahram.

Answer:
In his saying (peace and blessings be upon him): “It is not permissible for a woman who believes to travel , except with a mahram with her.” Therefore, it is not permissible for a woman to travel without a mahram.
And the mahram is one who is permanently forbidden to her from among her relatives or her in-laws. This is the mahram. He must be an adult of sound mind who accompanies her in travel. A man came to the Prophet (peace and blessings be upon him) intending to go on a military expedition and informed the Prophet (peace and blessings be upon him) that his wife had gone out for Hajj. So he (peace and blessings be upon him) said to him: “Go back and perform Hajj with your wife.” He sent him back from the expedition to perform Hajj with his wife. This indicates the obligation of the mahram for a woman in travel, and that it is not permissible for her to perform Hajj or 'Umrah, or travel any kind of travel, except with her mahram. This is because she needs him, as she is weak; she may fall ill, she may be struck by an illness, or she may encounter an incident among incidents. She needs a mahram to protect her, defend her, and look after her interests, because she is weak and a fitnah (trial, discord or temptation). Yes.