question #2 Sahih Muslim 233c, Book 2, Hadith 19 : What is the significance of observing Friday prayers in relation to sin expiation?

Verily the Messenger of Allah (ﷺ) said: The five (daily) prayers and from one Friday prayer to the (next) Friday prayer, and from Ramadhan to Ramadhan are expiations for the (sins) committed in between (their intervals) provided one shuns the major sins.