Is prayer and fasting obligatory for one whose usual menstrual bleeding stopped after seven days, but the brownish discharge continued for another four days?

What a woman sees of brownish discharge at the time of her menstrual period is considered menses, as is blood discharged due to birth control pills if it occurs during the time of menstruation. As for brownish discharge after the cessation of blood: what is connected to the blood is menses, but what occurs after seeing purity (by dryness or white discharge) and the passing of the accustomed period is not considered menses. In this case, it is necessary to perform istinja’ and wudu’ for every prayer and to do what a woman with prolonged vaginal bleeding (istihada) does.