Sahlah daughter of Suhayl had a prolonged flow of blood. She came to the Prophet (ﷺ). He commanded her to take a bath for every prayer. When it became hard for her, he commanded her to combine the noon and afternoon prayers with one bath and the sunset and night prayer with one bath, and to take a bath (separately) for the dawn prayer.

Abu Dawud said: Ibn 'Uyainah reported from 'Abd al-Rahman b. al-Qasim on the authority of his father, saying: A woman had a prolonged flow of blood. She asked the Prophet (ﷺ). He commanded her to the same effect.