Is the blood that appeared on the third day of Ramadan, nine days after a woman's purity in Ramadan and before her usual menstrual period, considered menstruation, necessitating the making up of the days on which it appeared, or not?

The questioner did not mention the duration of the bleeding. Blood that reappears after purity and before the next menstrual period may be menses or istihadah (non-menstrual vaginal bleeding). By referring to Fatwa no. 84425, it can be determined whether the blood is menstrual blood or istihadah. Fatwa no. 73525 clarifies the signs of purity. If it is determined that the fasting occurred during menstruation, then it must be made up. However, if it occurred during istihadah, the fast is valid. If the matter is not clear, the situation must be detailed for an accurate answer.