Yahya related to me from Malik from Hisham ibn Urwa from his father from Zaynab bint Abu Salama that she saw Zaynab bint Jahsh, the wife of Abd ar-Rahman ibn Awf, and she used to bleed as if menstruating. She would do ghusl and pray.
Muwatta Malik Book 2, Hadith 106
← Previous Hadith Yahya related to me from Malik from Nafi from Sulayman ibn Yasarfrom Umm Salama, the wife of the Prophet, may Allah bless him and grant him peace, that a certain woman in the time of the Messenger of Allah, may Allah bless him and grant him peace, used to bleed profusely, so Umm Salama consulted the Messenger of Allah, may Allah bless him and grant him peace, for her, and he said, "She should calculate the number of nights and days a month that she used to menstruate before it started happening, and she should leave off from prayerfor that much of the month. When she has completed that she should do ghusl, bind her private parts with a cloth, and then pray."

Muwatta Malik Book 2, Hadith 105 Next Hadith → Yahya related to me from Malik from Sumayy, the mawla of Abu Bakr ibn Abd ar-Rahman that al-Qaqa ibn Hakim and Zayd ibn Aslam sent him to Said ibn al-Musayyab to ask how a woman who was bleeding as if menstruating should do ghusl. Said said, "She does a ghusl to cover from the end of one period to the end of the next, and does wudu for every prayer, and if bleeding overtakes her she should bind her private parts."

Muwatta Malik Book 2, Hadith 107