Musnad Ahmad 1153:930

Muhammad ibn Ja‘far narrated to us, he said: Shu‘bah narrated to us, from Abu Bakr ibn Hafs, from ‘Urwah ibn al-Zubayr, he said: ‘Aishah said: "What interrupts the prayer?" He said: So we said: "The donkey and the woman." He said: So ‘Aishah said: "Indeed, the woman is truly a bad beast. I have seen myself in front of the Messenger of Allah, peace and blessings of Allah be upon him, lying across [the floor] like the lying of a funeral bier while he was praying." Shu‘bah said: "Between him and the Qiblah, as I think."