What is the ruling on abandoning treatment for illnesses where abandoning treatment leads to certain death?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: What is the ruling on abandoning treatment for illnesses where abandoning treatment leads to certain death, such as kidney failure, or the treatment of blocked arteries, and the like of what has become easy to treat in this time? Is it obligatory for him to seek treatment, or not?

Answer:
What is obligatory according to the majority is that treatment is permissible, and he has the right to abandon it. As for the claim that it leads to certain death, that is not correct; that is not correct. Allah the Exalted may cure him, and how many a patient reached an age where the doctors gave up hope for him and he gave up hope, yet Allah the Mighty and Majestic cured him. As for it being said that this illness definitely leads to death, that is incorrect. And if he dies, praise be to Allah, he dies upon the religion of Islam.