It is narrated from Sayyiduna Usama bin Sharik (may Allah be pleased with him) that he said: I was present when the Bedouins were asking the Prophet (peace and blessings of Allah be upon him) questions: Is there any harm for us in doing such and such a thing? Is there any sin for us in doing such and such a thing? So the Messenger of Allah (peace and blessings of Allah be upon him) said: "O servants of Allah! Allah has removed hardship/difficulty, except for the one who cuts off a portion from his brother’s honor; so this is the person who has sinned and is destroyed." They said: O Messenger of Allah! Should we seek medical treatment? So he (peace and blessings of Allah be upon him) said: "Seek medical treatment, for Allah has sent down a cure for every disease He has sent down, except death." They said: O Messenger of Allah! What is the best thing that has been given to a servant? He (peace and blessings of Allah be upon him) said: "Good character."
Hadith Referenceمسند اسحاق بن راهويه / كتاب المرضٰي و الطب / 685
Hadith Takhrij«سنن ابوداود ، كتاب الطب ، باب الرجل يتداوي ، رقم : 3855 . سنن ترمذي ، ابواب الطب ، باب ماجاء فى الدواء والحث عليه ، رقم : 2038 . سنن ابن ماجه ، رقم : 3436 . قال الشيخ الالباني : صحيح . مسند احمد : 278/4 . صحيح ابن حبان ، رقم : 6061 .»