question #1 Sahih al-Bukhari 1871, Book 29, Hadith 5 : What significance does the city of Medina hold in Islamic history according to the teachings of the Prophet Muhammad (ﷺ)?

Allah’s Messenger (ﷺ) said, “I was ordered to migrate to a town which will swallow (conquer) other towns
and is called Yathrib and that is Medina, and it turns out (bad) persons as a furnace removes the
impurities of iron.