A vow not to ride with a son who drives recklessly

Question:
This questioner from al-Dawab says that she vowed not to ride with her son in his car because he drives at a deadly speed. Now she needs this son to travel with her to the Qasim region. What should she do, Honorable Shaykh?

Answer:
It is not permissible for her to ride with him when he is driving at a reckless speed that exceeds what is known and the limit, because this is a form of throwing oneself into harm. If she makes a vow, then this has the ruling of an oath. If she rides with him, she has broken the oath, and she owes the expiation for an oath, which is feeding ten poor people, or clothing ten poor people, or freeing a believing slave. If she cannot do that, she must fast for three days.
This is from the perspective of the oath. As for the perspective of riding with him while he is driving at a speed that exceeds what is known, it is not permissible for her to do so, because this is throwing oneself into destruction, exposing oneself to harm. This is a matter that is not permissible.