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كتاب الاعتصام بالكتاب والسنة
96  
Holding Fast to the Qur'an and Sunnah
Sahih al-Bukhari 7268

Narrated Tariq bin Shihab:

A Jew said to `Umar, "O Chief of the Believers, if this verse: 'This day I have perfected your religion for you, completed My favors upon you, and have chosen for you, Islam as your religion.' (5.3) had been revealed upon us, we would have taken that day as an `Id (festival) day." `Umar said, "I know definitely on what day this Verse was revealed; it was revealed on the day of `Arafat, on a Friday."

حَدَّثَنَا الْحُمَيْدِيُّ، حَدَّثَنَا سُفْيَانُ، عَنْ مِسْعَرٍ، وَغَيْرِهِ، عَنْ قَيْسِ بْنِ مُسْلِمٍ، عَنْ طَارِقِ بْنِ شِهَابٍ، قَالَ قَالَ رَجُلٌ مِنَ الْيَهُودِ لِعُمَرَ يَا أَمِيرَ الْمُؤْمِنِينَ لَوْ أَنَّ عَلَيْنَا نَزَلَتْ هَذِهِ الآيَةُ ‏{‏ الْيَوْمَ أَكْمَلْتُ لَكُمْ دِينَكُمْ وَأَتْمَمْتُ عَلَيْكُمْ نِعْمَتِي وَرَضِيتُ لَكُمُ الإِسْلاَمَ دِينًا‏}‏ لاَتَّخَذْنَا ذَلِكَ الْيَوْمَ عِيدًا‏.‏ فَقَالَ عُمَرُ إِنِّي لأَعْلَمُ أَىَّ يَوْمٍ نَزَلَتْ هَذِهِ الآيَةُ، نَزَلَتْ يَوْمَ عَرَفَةَ فِي يَوْمِ جُمُعَةٍ‏.‏ سَمِعَ سُفْيَانُ مِنْ مِسْعَرٍ وَمِسْعَرٌ قَيْسًا وَقَيْسٌ طَارِقًا‏.‏
Reference : Sahih al-Bukhari 7268
In-book reference : Book 96, Hadith 1
USC-MSA web (English) reference : Vol. 9, Book 92, Hadith 373
  (deprecated numbering scheme)