It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that once a person asked the Prophet (peace and blessings be upon him) about the ritual bath (ghusl) after major impurity. The Prophet (peace and blessings be upon him) replied: "I pour water over my head three times."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 14259