If a woman sees blood after she has purified herself from menstruation but before she has performed ghusl from janabah, is this blood considered menstruation? What are the implications for both of them? Is she required to perform ghusl for janabah, or should she postpone it to perform ghusl for both menstruation and janabah together? Are they sinful?

If a woman is certain of her purity, either by complete dryness or by the discharge of white fluid, then any blood that appears afterwards is not considered menstrual blood and does not prevent her from praying, fasting, or engaging in intercourse. However, if she is not certain of her purity and relies on the end of her usual menstrual period, then any blood discharged is considered menses.

Blood exceeding the usual period is a discharge from a vein and is not counted as menses. A woman, once she becomes pure after the end of her customary period, should perform ghusl (definition) (ritual bath) and is considered to be in a state of purity. Any blood, yellowish, or brownish discharge she sees after that is considered istihada (non-menstrual vaginal bleeding) and does not prevent her from praying.

There is no blame in engaging in intercourse if the couple believes menstruation has ended. There is also no blame in delaying the ghusl for janaba (major ritual impurity) until the woman performs ghusl for both menstruation and janaba together, although it is preferable to perform ghusl for janaba first to allow for the recitation of the Qur'an.