What is the ruling on shaking hands with women through a barrier?

Question : The questioner asks: Is it permissible to shake hands with female relatives through a barrier?

Answer : If the female relatives are mahram (relatives one may not marry) to the person, meaning they are among those forbidden to him in marriage, then it is permissible for him to shake their hands through a barrier or directly. This is because a mahram is permitted to look at the face, hands, and feet of the woman who is his mahram, as mentioned by the scholars. However, if the relative is not a mahram to you, it is not permissible to shake her hand without a barrier, even if it is your custom to shake their hands. In that case, a person must abandon that custom because it contradicts the Shari'ah. Touching is greater than looking, and desire is stirred more by touching than by looking. If a person does not look at the hand of a woman who is not among his mahram, how can he grasp that hand and touch her body or skin with the skin of his hand?
But does he shake her hand through a barrier? We say that if doing so does not cause fitnah (trial, discord or temptation) for either the man or the woman, then I hope there is no harm in it, especially if they have become accustomed to it and abandoning it would necessitate