A lady should stop performing Salah and Sawm during the days of her menstruation. Once she is pure, she should perform Ghusl and make up for the days of Sawm but not the Salahs she missed. (Part No. 10; Page No. 157)
In case that she sees Sufrah (Yellowness) and Kudrah (swarthiness) after the start of Tuhr (purification), she should perform Salah and Sawm and not be affected by such discharges. However, she should perform Wudu' (ablution) when the due time of each Salah starts for
Um `Atiyyah (may Allah be pleased with her) said:
We used to disregard dark and yellow discharges after the start of Tuhr.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.