Hadith 37

d the truthful ones (Imams-asws), used to instruct some of the owners of diseases to use what had harmed the one (others) who had the disease, but it would not to harm him, and that was because they-asws, peace be upon them-asws, knew that the cause of the disease was cut off. So, when the human being uses what he uses, his usage of it would be with the health from whereby he is not aware with that, and their-asws knowledge with that is from the Direction of Allah-azwj the Exalted upon the way of the miracles of theirs-asws and the proof of their-asws being the ones specialised with it; and breaking the habit is in its meaning. So, a people thought that the utilisation, when it results with the substance of the illness, would be beneficial. They were mistaken in it and they were harmful with it. And this is a section Abu Ja’far-asws did not refer to it, and he-asws the reliable one in this subject; and the aspects which we shall mention from afterwards, these are based upon what he-asws mentioned, and the Ahadeeth carrying what he-asws had described is in accordance to what we have mentioned’ – end. I (Majlisi) am saying, ‘And I say that some of them may have another aspect, which is that the mention of some medicines that are not suitable for the disease is a way of temptation and testing, in order to distinguish a sincere believer with strong faith from an imposter or weak in faith. If the first (believer) used it, he benefited from it, not because of its characteristics and his nature, but rather because of his beseeching to those it had come from, and the sincerity of following it, such as benefiting from the soil of Al Husayn-asws, greetings be upon him-asws, and with seeking the Refuge and the supplications. And supporting that, I found a group of sincere Shias, the path of their knowledge and their treating was based upon the Ahadeeth reported from them-asws, and they were not referring to the doctor, and they were of healthy bodies and of long ages that those who were referring to the doctors and the treaters. And an equivalent of that is that those who did not care of the timings of the stars and not referring to their companions (astrologers), and were not relying upon these, but they were relying upon their Lord-azwj, and were seeking Refuge from the inauspicious timings, and from the evil of the calamities and the enemies, with the Verses and the supplications, were of better states and richer in wealth, and of better hopes than those who, in their delicate matter and its majestic ones, were referring to the chosen timings, and they were seeking refuge with that from the evils and the calamities, just as has passed in the chapters of the stars (astrology) and the trusting upon the Living, the Eternal’. Benefit
It is reported by the adversaries, from Abu Al-Darda’a that Rasool-Allah-saww said: ‘Allah-azwj Sent down the illness and the cure, and He-azwj has Made a cure for every illness, so take medications and do not be taking medications with Prohibited substances’. And from Jabir, ‘Rasool-Allah-saww having said: ‘There is a cure for every illness, so when a cure hits the illness, it would be cured by the Permission of Allah-azwj the Exalted’. And from Usama Bin Shareek who said, ‘The Bedouins said, ‘O Rasool-Allah-saww! Should we seek the medication? ’ He-saww said: ‘Yes, O servants of Allah-azwj! Seek medications, for Allah‑azwj did not Place any illness except He-azwj Placed a healing for it and a medication, except one’. They said, ‘O Rasool-Allah-saww! And what is it? ’ He-saww said: ‘The Prohibited (substances)’’. And from Abu Hureyra who said, ‘Rasool-Allah-saww said: ‘Allah-azwj has not Sent down any illness except He-azwj has Sent a cure for it’. And in a Hadeeth b