It is narrated from Hazrat Bakr (may Allah have mercy on him) that when Rabi’ was asked why he did not use medicine, he replied: At first, I intended to do so, but then I remembered the people of ‘Ad and Thamud and the Companions of the Well, and many other nations in between. I realized that those people also had afflictions and there were healers among them as well. Yet, both the one who treated and the one who was treated have all passed away.