Sayyiduna Usamah bin Sharik (may Allah be pleased with him) narrates: I was present with the Prophet Muhammad (peace be upon him) when the Bedouins were asking him questions, saying: "Will there be any sin upon us if we do this?" They asked this twice. The Prophet Muhammad (peace be upon him) said: "O servants of Allah! Allah has removed sin except for the one who attacks the honor of his brother; such a person will be guilty of sin." The people asked: "O Messenger of Allah (peace be upon him)! If we use medicine, will there be any sin upon us?" The Prophet Muhammad (peace be upon him) said: "O servants of Allah! Use medicine, for Allah has created a cure for every disease He has created." They asked: "O Messenger of Allah (peace be upon him), what is the best thing that a servant has been given?" The Prophet Muhammad (peace be upon him) said: "Good character." Sufyan says: "Today, there is no better chain of narration on the face of the earth than this."
Hadith Referenceصحیح ابن حبان / كتاب الطب / 6061
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «غاية المرام» (292)، «صحيح أبي داود» (1759)، «المشكاة» (4532).فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح