question #1 Sahih Muslim 1178b, Book 15, Hadith 5 : What is the significance of delivering sermons during the pilgrimage at ‘Arafat?

‘Amr b. Dinar narrated with the same chain of transmitters that he heard the Messenger of Allah (ﷺ) delivering sermon at ‘Arafat, and he made a mention of this hadith (as quoted above).