Nisaa
Yes. Istihadah does not stop a woman's prayer the way hayd does. She does not treat bleeding outside her known cycle as menstruation, and she prays her five daily prayers, obligatory and voluntary alike, for as long as the bleeding continues. What istihadah asks of her is a short routine before each prayer, not a pause from prayer itself.
The base ruling comes from the hadith of Fatimah bint Abi Hubaysh (Radi'Allahu Anha), who asked the Prophet (Salla Allahu 'Alayhi Wa Sallam): "I am a woman who suffers from istihadah and I am never pure. Should I abandon prayer?" He answered: "No, that is from a vein and not menstruation. So when your hayd comes, leave prayer, and when it has passed, wash the blood from yourself and pray." (Narrated by al-Bukhari and Muslim). The instruction is to keep praying, not to wait for the bleeding to stop.
What she does before each prayer
- Secure a pad or cloth. Hamnah bint Jahsh (Radi'Allahu Anha) brought the Prophet (Salla Allahu 'Alayhi Wa Sallam) the same complaint. After telling her to count six or seven days of each month as her hayd, a further narration of her hadith has him tell her to bind herself with a cloth, or use a cotton pad, to hold the blood back. (Narrated by Abu Dawud and al-Tirmidhi). This is a practical precaution against soiling her clothes and the prayer space, not a condition for the prayer's validity.
- Perform Wudu. A further narration of Fatimah bint Abi Hubaysh's case, preserved by Abu Dawud and al-Nasai, adds the words "then perform Wudu for every prayer, until that time comes." A few later scholars, among them al-Bayhaqi, raised the possibility that this addition belongs to a sub-narrator rather than being the Prophet's own words, but it is what the majority of scholars, across all four madhabs, act on: a woman with istihadah is treated as someone with a continuous minor hadath, comparable to chronic incontinence, so her Wudu is renewed at each prayer rather than assumed to carry over from one to the next.
Ghusl once, not at every prayer
Ghusl is owed a single time, when her hayd or nifas ends and istihadah begins, the same Ghusl any woman performs at the end of her period. After that one Ghusl, only Wudu is required before each prayer, not another full bath. A separate report describes Umm Habibah bint Jahsh (Radi'Allahu Anha), who also had prolonged istihadah, taking Ghusl before every prayer (narrated by Muslim). Most scholars read this as the extra caution she chose for herself rather than a general obligation, since the instruction given to Fatimah bint Abi Hubaysh was Wudu, not Ghusl. For what does require a full Ghusl and when, see Janabah and Ghusl.
Where the four madhabs differ
All four schools agree that her Wudu does not carry from one prayer into the next, but they explain why differently, and the explanation changes what actually breaks it.
- Hanafi school: her Wudu is tied to the prayer's time (waqt) rather than to the bleeding itself. It becomes invalid the moment that time ends, whether or not any fresh blood appeared while she held it. This is the same principle Hanafi fiqh applies to anyone with a continuous excuse (ma'dhur), such as chronic incontinence or a wound that will not stop draining.
- Maliki, Shafi'i and Hanbali schools: her Wudu is invalidated by the hadath itself, meaning the ongoing flow of blood, not by the clock. In practice this usually reaches the same result, since her bleeding rarely stops for long, but the reasoning differs: on this view, a woman whose flow genuinely pauses across a change in prayer time could still be praying validly on her earlier Wudu, where the Hanafi position would still call for a fresh one.
What this means in practice
Once she has made Wudu within a prayer's time, she may pray that obligatory prayer and any number of voluntary prayers on it, until the time ends or something unrelated to the istihadah breaks it, such as sleep or using the toilet. She is not required to renew Wudu for every rakah or every recitation; the Wudu covers the whole prayer time it was made within, on all four schools, not a single prayer alone.
Istihadah leaves the rest of worship untouched in the same way. It does not stop tawaf the way hayd does, does not stop touching the Mushaf, and does not stop fasting. The pad and Wudu routine above is the entire adjustment istihadah asks of her prayer. If the bleeding is heavy, prolonged, or simply different from her normal pattern, telling istihadah apart from hayd in the first place is the question worth settling first, since the answer decides which of these two routines applies to her.