question #1 Sahih Muslim 892c, Book 8, Hadith 18 : What is the significance of allowing joyful activities during the days of ‘Id in Islam?

Abu Bakr, leave them alone for these are the days of ‘Id. And ‘A’isha said: I recapitulate to my mind the fact that once the Messenger of Allah (ﷺ) screened me with his mantle and I saw the sports of the Abyssinians, and I was only a girl, and so you can well imagine how a girl of tender age is fond of watching the sport.