Are the prayers that were performed on Wednesday and Thursday considered valid and obligatory, or is that not permissible, given that menstruation began with a drop of blood on Tuesday, then built up on Wednesday and Thursday, and clearly appeared on Thursday afternoon and continued for six days? And is it obligatory to make up the Thursday afternoon prayer during which menstruation clearly appeared, or the Tuesday evening prayer during which a small amount of blood appeared?

Scholars differ regarding whether a single drop of blood is considered menstruation (hayd). The majority of scholars hold that it is not hayd, as it is less than the minimum duration of menstruation. They consider it to be vitiated blood (dam fasad) which necessitates cleansing and ablution (wudu'), and does not prevent prayer or fasting. In contrast, the Malikis consider it hayd, and they do not stipulate a minimum limit for hayd.

Based on this, the prayers performed upon seeing drops of blood or brownish discharge (kudra) before the natural onset of menstruation are valid and obligatory. What was missed during those days must be made up.

If menstruation begins after the prayer time has entered but before the prayer is performed, the woman must make up that prayer after she becomes pure, based on the Prophet's (peace be upon him) saying: "Whoever catches one rak'ah of the prayer has caught the prayer."