Is blood that returns in the middle of Ramadan considered menstruation or istihadah, and what are the implications for prayer and completing the Quran?

If the blood that reappears after purity has come down fifteen days after purity, then it is a new menstruation. However, if the blood stopped after the usual period and then reappeared before fifteen days of purity had passed, it is not considered menstruation unless it recurs three times. Therefore, the reappearance of the second blood does not prevent prayer and fasting unless it recurs three times. And the days the woman fasted while the second blood was present, her fasting is valid.