What is the dividing line between worldly and otherworldly matters, and are medical affairs among them, and what is the ruling on the Ahadith mentioned in this regard?

Muslim narrated the Hadith (definition) of the pollination of date palms, which indicates that the Prophet, peace and blessings be upon him, might speak on worldly matters from his experience, and that the reference for such matters is to those with expertise. The fundamental principle for everything that comes in the Sharia (definition) texts—even if it pertains to worldly matters—is that it is for the purpose of legislation, unless there is evidence to the contrary. The actions of the Companions and the scholars of the Ummah confirm this principle, and that worldly matters which are not obligatory to obey are those that came "by way of opinion." Moreover, the Sharia encompasses worldly affairs and livelihoods, and this is clear from the story of Zubair and the Ansari, where the judgment of the Prophet, peace and blessings be upon him, in a worldly dispute was obligatory. Medical Ahadith are for the purpose of guidance.