Reply To: men going to mikvah on shabbos

What about the Mishna Berurah Shin Chaf SK Nun Hey (last two lines)?

http://www.hebrewbooks.org/pdfpager.aspx?req=49625&st=&pgnum=293

And Shin CHaf Alef SK Chaf Alef along with the Biur Halachah?

http://www.hebrewbooks.org/pdfpager.aspx?req=49625&st=&pgnum=322