Sayyidah Maymunah bint al-Harith (may Allah be pleased with her) says: I screened the Prophet (peace and blessings be upon him) while he (peace and blessings be upon him) was taking the ritual bath for janabah (major impurity). First he (peace and blessings be upon him) washed his hands, then poured water with his right hand over his left hand and washed his private part and whatever had got on it, then struck his hand on the wall, then performed ablution as for prayer, but did not wash his feet. Then he poured water over himself, then moved to another place and washed his feet.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 821