This hadith has been narrated on the authority of 'Amr b. Dinar with the same chain of transmitters, but none of them (the narrators) made a mention that he (the Holy Prophet) was delivering address at 'Arafat except Shu'ba.
Reference: Sahih Muslim 1178 c In-book : Book 15, Hadith 6 USC-MSA web (English) : Book 7, Hadith 2652 (deprecated)
Help us gift a modern, ad-free Islamic application for the Muslim Ummah. Your donation will be recorded as Sadaqah Jariyah in your book of deeds, In Sha Allah.