Yahya related to me from Malik, from Nafi, that Abdullah ibn Umar
used to say, "A menstruating woman who wants to go into ihram to do
either hajj or umra can do so if she so wishes, but she cannot do
tawaf of the House, nor the say between Safa and Marwa. She can
participate in all the rituals along with everybody else, except that
she cannot do tawaf of the House, nor the say between Safa and Marwa,
nor can she come near the mosque until she is pure."
Muwatta Malik Book 20, Hadith 56