Sahih Bukhari | Volume 5 | Hadith Number 689

Narrated by Tariq bin Shibab
Some Jews said, "Had this Verse been revealed to us, we would have taken that day as 'Id (festival)." 'Umar said, "What Verse?" They said: "This day I have Perfected your religion for you, Completed My Favour upon you And have chosen for you Islam as your religion" (5:3) 'Umar said, "I know the place where it was revealed; It was revealed while Allah's Apostle was staying at 'Arafat."