Musnad Abu Ya'la al-Mawsili 149:101

Zakariya ibn Yahya al-Wasiti narrated to us, Hushaym narrated to us, from Abd al-Malik, from Ata, from Aisha, who said: I used to perform ghusl (ritual bath) with the Messenger of Allah, may Allah bless him and grant him peace, from the state of janabah (major ritual impurity) from a single vessel, into which we would both dip our hands simultaneously. However, he would begin and perform wudu (ablution).