It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) was in a state of major ritual impurity (janabah), he would pour three handfuls of water over his head. Hasan bin Muhammad ibn Hanafiyyah (may Allah have mercy on him) said: Abu Abdullah! My hair is much more than that (for three handfuls to suffice). The narrator says that Sayyiduna Jabir (may Allah be pleased with him) struck his hand on Hasan’s thigh and said: My nephew! The Prophet’s (peace and blessings be upon him) hair was more and purer than yours.