Musannaf Ibn Abi Shaybah 1373 — What a woman with irregular bleeding

Muhammad bin Uthman said: "I asked Salim and al-Qasim about the woman with istihadah. One of them said: 'She does not pray during the days of her menstruation; when the days of her menstruation have passed, she takes a ritual bath and prays.' The other said: 'She takes a ritual bath from Zuhr to Zuhr.'"