Sayyidah Umm Habib (may Allah be pleased with her), the freed slave-woman of Umm Atiyyah, said: I was among the women who escorted the daughter of the Messenger of Allah (peace and blessings be upon him) as a bride, and he (peace and blessings be upon him) said: "When you pour water over her head, pour it three times in the ritual bath (ghusl) for major impurity (janabah)."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21701