I wonder what Islam, more specifically the Quran or one of the many hadeeth have to say when it comes to life-threatening diseases. Many muslim people think they have to suffer the illness they're battling right now whereas they are good treatments that help save their lives.
My question now is: Is that one obligated to use that treatment to save their own life or does that person needs to suffer from that illness and potentially die? Isn't that considered suicide?
Please give me supporting evidence with source references. Thank you