Is the prayer considered valid and is fasting permissible if light brown discharge appears after performing ghusl following menstruation and before the Fajr prayer?

The brownish discharge after purity is not considered menstruation, nor does it necessitate a ritual bath (ghusl). Fasting with it is valid, based on the statement of Umm Atiyyah: "We used not to consider the brownish and yellowish discharge after purity as anything [of consequence]." However, if it appears after ablution (wudu') and before prayer without renewing the ablution, the prayer is invalid and must be repeated. If it is clear blood, then it is considered menstruation and a ritual bath (ghusl) is required.