Narrated Thawban: Shurayh ibn Ubayd said: Jubayr ibn Nufayr gave me a verdict about the bath because of sexual defilement that Thawban reported to them that they asked the Prophet ﷺ about it. He (the Prophet) replied: As regards man, he should undo the hair of his head and wash it until the water should reach the roots of the hair. But there is no harm if the woman does not undo it (her hair) and pour three handfuls of water over her head.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
255. Commentary:
In the ritual bath (ghusl) for major impurity (janabah), one should pour water over the head and also rub the hair so that there remains no possibility of any part staying dry. However, in the ritual bath (ghusl) after menstruation (hayd), it is necessary to untie the hair, as has been detailed previously.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 255