 aisha said we learned this ruqyah from the messenger of allah so i used to recite it over her. she also reported that whenever the messenger of allah was ill he would recite the muawwidhat over himself and blow. she said when his pain became severe i used to recite it over him and wipe it with my hand hoping for its blessing.
قالت عائشة فعلمنا هذه الرقية من رسول الله فكنت . وعنها أن رسول الله كان إذا اشتكى يقرأ على نفسه بالمعوذات وينفث. قالت فلما اشتد وجعه كنت أقرأ عليه وامسح عنه بيده رجاء بركتها.