Musnad Ahmad 1153:1224

Abu al-Nadr narrated to us, Abu Mu'awiyah—meaning Shayban—narrated to us, from Layth, from 'Ata, from 'Aishah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The one who performs cupping and the one for whom cupping is performed have broken their fast."