«إذا اشتكيت فضع يدك حيث تشتكي ثم قل: بسم الله أعوذ بعزة الله وقدرته من شر ما أجد من وجعي هذا ثم ارفع يدك ثم أعد ذلك وترا»
The Prophet (peace and blessings be upon him) said:
"When you feel any pain, place your hand where you feel the pain, then say: Bismillah, a'udhu bi-'izzatillahi wa qudratihi min sharri ma ajidu min waja'i hadha (In the name of Allah, I seek refuge in the might of Allah and His power from the evil of the affliction I feel and of this pain of mine). Then lift your hand, and then repeat it an odd number of times (three, five or seven times)."
Hadith Referenceصحیح الجامع الصغیر / حرف الألف / 346