Maliks Muwatta Book 2, Hadith Number 70.
Section : How to do Ghusl for Major Ritual Impurity.
Yahya related to me from Malik from Ibn Shihab from Urwa ibn az-Zubayr from A’isha, umm al-muminin, that the Messenger of Allah, may Allah bless him and grant him peace, used to do ghusl for major ritual impurity from a vessel which contained a faraq.