How can there be a treaty with Allah and with His messenger for the idolaters save those with whom ye made a treaty at the Inviolable Place of Worship? So long as they are true to you, be true to them. Lo! Allah loveth those who keep their duty.
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.