‘Urwa b. az-Zubair reported from Fatima daughter of Abu Hubaish that her blood kept flowing, so the Prophet said to her, “When the blood of the menses comes it is black blood which can be recognised, so when that comes refrain from prayer; but when a different type comes perform ablution any pray, for it is due only to a vein.”
‘A'isha told of Fatima daughter of Abu Hubaish coming to the Prophet and saying, “I am a woman whose blood keeps flowing, and I am never purified; Shall I therefore abandon prayer?” He replied, “No that is only a vein and is not menstruation; so when your menstrua
tion comes on abandon prayer, and when it ends wash the blood from yourself and then pray.”
Umm Salama said that in the time of God’s messenger there was a woman who had an issue of blood, so Umm Salama asked the Prophet to give a decision about her. He said, “She should consider the number of nights and days during which she used to menstruate each month before she was afflicted with this trouble and abandon prayer during that period each month; then when she finishes that she should wash, tie a cloth over her private parts and pray.”
Malik, Abu Dawud and Darimi transmitted it, and Nasa’i transmitted something to the same effect;