Yahya related to me from Malik from Ibrahim ibn Abi Abla fromTalha ibn Ubaydullah ibn Kariyz that the Messenger of Allah, may Allahbless him and grant him peace, said, "Shaytan is not considered moreabased or more cast out or more contemptible or more angry on any daythan on the Day of Arafa. That is only because he sees the descent ofthe Mercy and Allah's disregard for great wrong actions. That isexcept from what he was shown on the Day of Badr." Someone said, "Whatwas he shown on the Day of Badr, Messenger of Allah?" He said, "Didn'the see Jibril arranging the ranks of the angels?"
USC-MSA web (English) reference: Book 20, Hadith 254
Arabic reference: Book 20, Hadith 950