(26) CHAPTER. Al-Istihadah (bleeding in between the periods is from blood vessel.
327. Narrated Aishah, the wife of the Prophet, peace be upon him : Umm Habiba got bleeding in between the periods for seven years. She asked Allah’s Messenger, peace be upon him, about it. He ordered her to take a bath (after the termination of actual periods) and added that it was from a blood vessel. But she used to take a bath for every Salat (prayer). (Without being ordered by the Prophet, peace be upon him, See Fath Al-Bari)