Breaking one's fast due to illness
Q: I am able to fast though I am not in good health. Lately I am suffering from bouts of fever for no apparent reason. I know that fever means that I have to break my fast. If I develop fear say an hour before Ifthaar, how long can I postpone Ifthaar and how close to Ifthaar can I break my fast so that my fast would still be valid for the day?