Musnad Ahmad 1153:166

Yahya narrated to us, Sufyan narrated to us, Sulayman narrated to us, from Muslim, from Masruq, from Aisha, that the Messenger of Allah (peace and blessings of Allah be upon him) used to seek refuge for some of his family, wiping them with his right hand, and he would say: "Remove the harm, O Lord of the people, and heal, for You are the Healer. There is no healing but Your healing, a healing that leaves behind no illness." He said: So I mentioned it to Mansur, and he narrated to me from Ibrahim, from Masruq, from Aisha, the like of it.