Tariq b. Shihab reported that a Jew said to'Umar: You recite a verse which, if it had been revealed in relation to us, we would have taken that day as the day of rejoicing. Thereupon 'Umar said: I know where it was revealed and on the day when it was revealed and where Allah's Messenger ﷺ had been at that time when it was revealed. It was revealed on the day of 'Arafa (ninth of Dhu'l Hijjah) and Allah's Messenger ﷺ had been staying in 'Arafat. Sufyan said: I doubt, whether it was Friday or not (and the verse referred to) is this:" Today I have perfected your religion for you and completed My ____favours____ upon you" (5. 3).
The values taught through this hadith are knowledge, faithfulness to God's teachings, understanding Islam's importance in our lives, and respect for other religions.