Musnad Abu Ya'la al-Mawsili 150:222

'Abd al-A'la ibn Hammad narrated to us, Waki' narrated to us, Hisham narrated to us, from his father, from 'Aishah, she said: I used to perform ghusl (ritual bath) with the Prophet, may Allah bless him and grant him peace, [both of us] scooping from it [the same vessel] while we were in a state of janabah (major ritual impurity).