Q: Is it permissible for a women to read versus from the Quraan when she has her menses? What is the best ibaadat (act of worship) for her at this time?
A. It is not permissible to recite Qur’aan during menses.(Al Jauharatun Nayyirah V1 P119).
She may recite Tasbeeh, Durood, Istighfaar, etc. and these are wonderful forms of Ibaadat.
The Ulama have mentioned that every Namaaz time the menstruating woman should sit on her Musalla and engage in Thikr of any kind, as well as Du’aa.