Musnad Ahmad 1153:1317

'Abd al-Razzaq narrated to us, he said: Ma'mar narrated to us, from al-Zuhri, from 'Urwah, from 'Aishah, she said: "The Messenger of Allah, peace and blessings of Allah be upon him, used to blow upon himself during the illness in which he passed away with the *Mu'awwidhat* (the chapters of seeking refuge)."