´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."
Related hadith on this topic
Explanation & Benefits
Shaykh Muhammad Ibrahim bin Basheer
Benefit:
In this hadith, an issue regarding the ritual bath (ghusl) after major impurity (janabah) is mentioned: that water should be poured over the head three times. Its detail is that one handful should be poured on the right side of the head, the second on the left side of the head, and the third in the middle of the head. This detail is found in Sahih Muslim and Sahih Ibn Khuzaymah.
Source: Musnad al-Humaydi: Commentary by Muhammad Ibrahim bin Bashir, Page: 1006