Re: Physical Involvement
Nope. Just good character and some level of piety.
But just to explain a little further, it cannot possibly refer to virginity as all Prophet Muahammad’s pbuh wives (apart from one) were either widowed and divorcees, so clearly not virgins yet pious/pure enough to be the wives of a man who is called ‘mercy to all Worlds’ in Quran, and the most perfect human being ever created. So clearly there’s a message.
You have to remember that unlike Christianity, Islam places no special holy emphasis on virginity. If that was the case, divorce would not have been so easy nor widowed and divorced women would be encouraged to re-marry. But that is not to say that extra martial sex is not strictly prohibited in Islam.