Strengthening the Ummah

Once the Prophet (ﷺ) wrote a letter or had an idea of writing a letter. The Prophet (ﷺ) was told that they
(rulers) would not read letters unless they were sealed. So the Prophet (ﷺ) got a silver ring made with
"Muhammad Allah's Messenger (ﷺ)" engraved on it. As if I were just observing its white glitter in the hand
of the Prophet.