Amr bin Shu'aib narrates from his father, from his grandfather, that the Prophet Muhammad (peace be upon him) said: "Whoever poses as a physician but is not known for this profession, then he must pay compensation."
Hadith Referenceسنن الدارقطني / كتاب فى الأقضية والأحكام وغير ذلك / 4500
Hadith Takhrij«أخرجه الدارقطني فى ((سننه)) برقم: 4500 ، انفرد به المصنف من هذا الطريق»