" he will not be cleansed from the judgment of Hell" this does not mean a man can not pass something from his hand to the saleswoman's hand or a bus driver, if a woman gets on the bus- there's no prohibition for her to pay him in his hand and for him to give her change in her hand, rather- here the whole purpose of why he wants to pass from hand to hand is only in order to enjoy and stare. regarding this it says "he will not be cleansed etc" but from here we learn that if he stares at her hand- it's simply a hand!- but if it does something to him, and she's not his wife, it is prohibited- how much more so - other types of stares. 