A woman exposing her upper arms and lower legs before her mahram (relatives one may not marry)

Question:
The questioner asks: Is it permissible for a woman to expose her upper arms and lower legs before her mahram (relatives one may not marry)?

Answer:
That is not good; there is fitnah (trial, discord or temptation) in it. She should not expose anything except the extremities that do not involve fitnah (trial, discord or temptation) and that need to be exposed.