"Umm Habibah bint Jahsh consulted the Messenger of Allah (ﷺ) and said: 'O Messenger of Allah, I suffer from Istihadah (non-menstrual vaginal bleeding).' He said: 'That is a vein, so perform Ghusl and pray.' And she used to perform Ghusl for every prayer."
"I saw her wash tub filled with blood. The Messenger of Allah (ﷺ) said to her: 'Stop (praying) for as long as your period prevents you, then perform Ghusl.'" (Another chain)
"Let her count the number of nights and says that she used to menstruate each month before this happened to her, and let her stop praying for that amount of time each month. Then when that is over let her perform Ghusl, then let her use a pad, and pray."
'That is not menstruation, rather it is a kick [1] in the womb, so let her work out the length of the menses that she used to have, and stop praying (for that period of tie), then after that period of time), then after that let her perform Ghusl for every prayer.'" [1] A kick in the womb: in other narrations means "A kick from Shaitan,", meaning that the Shaitan uses it to confuse her about her religious commitment.
"That is not menstruation, rather it is a vein. Tell her not to pray for the amount of time that her period used to last, then let her perform Ghusl and pray.' She used to perform Ghusl for every prayer.
"That is a vein, so when your period comes, do not pray, and when your period is over, purify yourself and pray in between one period and the next." This is evidence that Al-Aqra' is menstruation. Abu 'Abdur-Rahman said: Hisham bin 'Urwah reported this Hadith from 'Urwah, and he did not mention what Al-Mundhir mentioned in it.
Fatimah bint Abi Hubaish came to the Messenger of Allah (ﷺ) and said: "I am a woman who suffers from Istihadah (non-menstrual vaginal bleeding) and I never become pure. Should I stop praying?" He said: "No, that is a vein, it is not menstruation. When you period comes, stop praying, and when it goes, wash the blood from yourself and pray."
It was narrated from 'Aishah that a woman who suffered from Istihadah during the time of the Messenger of Allah (ﷺ) was told that it was a stubborn vein (i.e., one that would not stop bleeding). She was told to delay Zuhr and bring 'Asr forward, and to perform one Ghusl for both, and to delay Maghrib and bring 'Isha' forward, and to perform one Ghusl for both, and to perform one Ghusl for Subh.