Musnad Ahmad 1153:942

'Abd al-Razzaq narrated to us, he said: Sufyan informed us, from al-A'mash, from Muslim, from Masruq, from 'Aishah, she said: When anyone among the family of the Messenger of Allah (may Allah bless him and grant him peace) complained of an ailment, he would wipe him with his right hand, then say: "Remove the harm, O Lord of the people, and heal, for You are the Healer. There is no healing except Your healing, a healing that leaves behind no sickness."