It was narrated from Abu Hurairah that :A man asked him: "How much water should I pour over my head when I m sexually impure?" He said: "the messenger of Allah used to pour three handfuls of water over his head." The man said: "My hair is long." He said: "The Messenger of Allah had more hair than you and he was cleaner
Hadith No. 578
Sunan Ibn Majah
Gradings:
Al-Albani:
Hasan Sahih
Muhammad Fouad Abd al-Baqi:
Hasan Sahih
Shuaib Al Arnaut:
Sahih Lighairihi
Zubair Ali Zai:
Sahih