Book 1, Hadith 248

It was narrated from 'Aishah that when the Prophet (ﷺ) performed Ghusl from Janabah he would start by washing his hands, then he would perform Wudu' as for prayer, then he would dip his fingers in the water, then run them through his hair, then he would pour water over his head three times, then he would pour water over his entire body