These are the limits (imposed by) Allah. Whoso obeyeth Allah and His messenger, He will make him enter Gardens underneath which rivers flow, where such will dwell for ever. That will be the great success.
Times are computed by method; your mosque's timetable governs the adhan. Every text carries its source and grade. Nothing here is a fatwa, a prediction, or a substitute for a doctor: your own scholar decides what is contested, and the tradition itself says the practice is alongside treatment, never instead of it.