Some Jews said, "Had this Verse been revealed to us, we would have taken that day as ʿId (festival)." ʿUmar said, "What Verse?" They said:-- "This day I have Perfected your religion for you, Completed My Favor upon you And have chosen for you Islam as your religion" (5.3) ʿUmar said, "I know the place where it was revealed; It was revealed while Messenger of Allah ﷺ was staying at ʿArafat."
أَنَّ أُنَاسًا مِنَ الْيَهُودِ قَالُوا لَوْ نَزَلَتْ هَذِهِ الآيَةُ فِينَا لاَتَّخَذْنَا ذَلِكَ الْيَوْمَ عِيدًا فَقَالَ عُمَرُ أَيَّةُ آيَةٍ فَقَالُوا {الْيَوْمَ أَكْمَلْتُ لَكُمْ دِينَكُمْ وَأَتْمَمْتُ عَلَيْكُمْ نِعْمَتِي} فَقَالَ عُمَرُ إِنِّي لأَعْلَمُ أَىَّ مَكَانٍ أُنْزِلَتْ أُنْزِلَتْ وَرَسُولُ اللَّهِ ﷺ وَاقِفٌ بِعَرَفَةَ