Can one use a tampon whilst fasting?
A. A menstruating woman cannot fast even if she uses a tampon. However if she uses a tampon for bleeding or discharges other than her menstruating blood then the answer is as mentioned. In Ad-Durrul Mukhtar and Tahtaawi alaa Maraaqil Falaah, the authors have mentioned that if cotton is inserted in the female private part, the fast will be nullified if the cotton is totally out of sight. If a piece of cotton remains slightly out, even if it be in the Farje-Khaarij (outer vagina) the fast will be intact. We therefore conclude that the fast will not break in the case where the tampon is not totally inserted but could be seen from outside.