Faṭimah: For example, if a woman has a fixed time cycle and sees blood on the 10th day of every month, if she sees blood on the expected day (i.e., on the 10th day), should she consider it the start of her menstruation as soon as she sees it?

Mother: Yes, as soon as she sees the blood, she should consider it menstruation and stop performing prayers.

Faṭimah: If a woman has a fixed time cycle, how many days might her period last?

Mother: If her bleeding continues for more than three days and stops before ten days, all of that blood is considered menstruation.

Faṭimah: If a woman has a fixed time cycle and sees blood at the expected time, but the bleeding lasts more than ten days, what should she do?

Mother: If the blood remains the same throughout the entire period, she should consider the number of days in the cycle of some close relatives (such as her mother, sister, cousin, etc.) as her menstruation period, and the rest is classified as Istiḥāḍa. For example, if most of the female relatives have a seven-day cycle, she can consider the first seven days as menstruation and the rest as Istiḥāḍa.