Ibn Kathir's Commentary on Surah al-Waqi'ah (56), ayat (verses) 35-37, quotes the
hadith according to which "The Prophet Muhammad, Allah's blessings and peace be upon
him, was asked: 'Will we have sex in Paradise?' He answered: 'Yes, by Him Who holds my
soul in His hand, and it will be done with a strong shove. When it is finished, she
will return untouched and virgin again."

"with a strong shove"?

LOL!

"by Him Who holds my soul in His hand"

If it was the said virgin who uses her hand, there would be no problem to begin with.