Wiping One's Face After Supplicating

Question :

The questioner asks two questions. First, what is the ruling regarding wiping one's face after supplicating? Second, is it allowed for a man to shake hands with a woman?

Answer:

The only narrations that indicate the permissibility of wiping the face after supplication are weak. Therefore, the stronger of the two opinions is not to wipe the face with one's hands. Some scholars permit this practice, arguing that the weak narrations strengthen each other, raising them to a level of acceptability. But even though the narrations might strengthen each other, they may only reach the level of Hasan by virtue of others, as mentioned by Al-Hafiz Ibn Hajr in Bulugh Al-Maraam.

The point is that this practice is not mentioned in any authentic Hadith the Prophet did not do it after the rain prayer or after any other situation wherein he raised his hands, like when he was at As-Safa and Marwa, "Arafaat, Muzdalifah, or at the Jimaar. Because he was not reported to have wiped his face after supplicating, it becomes clear that it is better not to do so.

As for the second question, it is not permissible for a Muslim man to shake hands with an unrelated woman, even if it is her who stretched out her hand to him. He should inform her that it is not permissible for a man to do so, and she is only allowed to shake the hand of a Mahrim (i.e., one she is allowed to be alone with), like her brother or her father's brother. As for the unrelated, it is not allowed for the man or the woman due to the saying of the Prophet ﷺ said:
"Verily, I do not shake the hands of women."

And due to the saying of 'A'ishah, may Allah be pleased with her, in the authentic Hadith, "The Messenger of Allah's hand never touched the hand of a women; he would take their pledge of allegiance only through speech."

And due to the saying of Allah Almighty:
"Indeed in the Messenger of Allah you have a good example to follow."

Source:
Ibn Baz
Fatawa Islamiyah, Vol. 7 Pages 295-296