Is it obligatory to repeat the fasting of the past month of Ramadan if intermittent bleeding continued throughout the entire month, and do I consider the presence of streaks of blood after purity to be استحاضة (istihada)?

If a woman sees blood during the period when menstruation is possible, and it continues for more than fifteen days, she is considered to be in a state of istihadah (non-menstrual vaginal bleeding). She is then considered pure and must pray and fast after performing ablution for the time of each prayer.

Determining the menstrual period for a woman experiencing istihadah is done by differentiating between menstrual blood and istihadah blood based on color, smell, or density. What is distinguished as menstrual blood is considered menstruation, as long as it does not exceed fifteen days. Anything beyond that is istihadah.

If she cannot distinguish, she refers to her regular habit to determine the duration of her menstruation. According to the Hanbalis, she refers to her habit first. If she has no habit or cannot distinguish, her menstruation is six or seven days.

The menstrual period does not exceed fifteen days, and the period of purity (tuhr) is not less than fifteen days.

Blood that comes in continuous drops after fifteen days from the previous cycle and continues for more than fifteen days: it is considered menstruation if it is distinguished by a dark color (provided it does not exceed fifteen days). Anything beyond that is istihadah. If she cannot distinguish, she refers to her habit.

The questioner must make up the fasts for the days during which menstrual blood was distinguished, as it prevents fasting. If she cannot distinguish, she makes up the fasts for the days of her usual habit.

Blood threads after purity: If they appear before fifteen days have passed since the start of the previous cycle, they are considered a continuation of it (unless the duration of the cycle exceeds the maximum period of menstruation, otherwise it is istihadah). If they appear after fifteen days from the start of menstruation and before fifteen days of purity, it is considered irregular bleeding (dam fasad). If they appear after fifteen days of purity, it is a new menstruation (if its discharge continues for a day and a night); otherwise, it is irregular bleeding.