When the Messenger of Allah ﷺ performed the ritual bath after major impurity, he would begin by washing his hands. Then he would pour water with his right hand onto his left and wash his private parts. Next, he would perform ablution as he did for prayer. Then he would take water and run his fingers through the roots of his hair, and once he was satisfied that the water had reached the scalp, he would pour three handfuls over his head. After that, he would pour water over the rest of his body, and finally wash his feet.
حدثنا يحيى بن يحيى التميمي حدثنا أبو معاوية عن هشام بن عروة عن أبيه
كان رسول الله ﷺ إذا اغتسل من الجنابة يبدأ فيغسل يديه ثم يفرغ بيمينه على شماله فيغسل فرجه ثم يتوضأ وضوءه للصلاة ثم يأخذ الماء فيدخل أصابعه في أصول الشعر حتى إذا رأى أن قد استبرأ حفن على رأسه ثلاث حفنات ثم أفاض على سائر جسده ثم غسل رجليه