Umm Habiba bint Jahsh sought a ruling from the Messenger of Allah ﷺ, saying, "Messenger of Allah, I experience prolonged bleeding."He replied, "That is only a vein. Perform the ritual bath and pray."So she would perform the ritual bath before every prayer.
أخبرنا قتيبة قال حدثنا الليث عن ابن شهاب عن عروة
استفتت أم حبيبة بنت جحش رسول الله ﷺ فقالت يا رسول الله إني أستحاض فقال إنما ذلك عرق فاغتسلي وصلي فكانت تغتسل لكل صلاة
Muslim narrated it in the chapter on menstruation, section on the woman with irregular bleeding, her ghusl and her prayer, hadith no. 63/334, from Qutayba through him, and it is in Kubra, hadith no. 207.