Umm Habibah, the freed slave-woman of Umm Atiyyah (may Allah be pleased with her), narrates from Umm Atiyyah (may Allah be pleased with her); she said: I was among the women who took one of the daughters of the Prophet (peace and blessings be upon him) as a bride to her husband, and the Messenger of Allah (peace and blessings be upon him) said to us: "When she bathes, pour water over her head three times." Yahya said: I asked Sharik: Is this about the ritual bath (ghusl) for major impurity (janabah)? He said: Yes.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21632