Reply To: wording to decline a hand shake?

I have a question for all posters.Clearly “negiah” would be ossur for a man- “lo sikrevu legalos ervah” (see psukim in Vayikro 18 -including 18-19, for a niddah)but why would it be ossur for a woman to shake another man’s hands?? there is no issur of “negiah’ on her. Please elucidate because I don’t see a source for a woman having an issur “kirvah”.(see Rambam Hilchos issurei biah, perek 21,mishne 1)