Sunan An Nasai 5015

أَخْبَرَنَا أَبُو دَاوُدَ، ‏‏‏‏‏‏قَالَ:‏‏‏‏ حَدَّثَنَا جَعْفَرُ بْنُ عَوْنٍ، ‏‏‏‏‏‏قَالَ:‏‏‏‏ حَدَّثَنَا أَبُو عُمَيْسٍ، ‏‏‏‏‏‏عَنْ قَيْسِ بْنِ مُسْلِمٍ، ‏‏‏‏‏‏عَنْ طَارِقِ بْنِ شِهَابٍ، ‏‏‏‏‏‏قَالَ:‏‏‏‏ جَاءَ رَجُلٌ مِنْ الْيَهُودِ إِلَى عُمَرَ بْنِ الْخَطَّابِ، ‏‏‏‏‏‏فَقَالَ:‏‏‏‏ يَا أَمِيرَ الْمُؤْمِنِينَ،‏‏‏‏ آيَةٌ فِي كِتَابِكُمْ تَقْرَءُونَهَا لَوْ عَلَيْنَا مَعْشَرَ الْيَهُودِ نَزَلَتْ لَاتَّخَذْنَا ذَلِكَ الْيَوْمَ عِيدًا، ‏‏‏‏‏‏قَالَ:‏‏‏‏ أَيُّ آيَةٍ ؟، ‏‏‏‏‏‏قَالَ:‏‏‏‏ الْيَوْمَ أَكْمَلْتُ لَكُمْ دِينَكُمْ وَأَتْمَمْتُ عَلَيْكُمْ نِعْمَتِي وَرَضِيتُ لَكُمُ الإِسْلامَ دِينًا سورة المائدة آية 3، ‏‏‏‏‏‏فَقَالَ عُمَرُ:‏‏‏‏ إِنِّي لَأَعْلَمُ الْمَكَانَ الَّذِي نَزَلَتْ فِيهِ، ‏‏‏‏‏‏وَالْيَوْمَ الَّذِي نَزَلَتْ فِيهِ نَزَلَتْ عَلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فِي عَرَفَاتٍ فِي يَوْمِ جُمُعَةٍ .

It was narrated that Tariq bin Shihab said: A Jewish man came to 'Umar bin Al-Khattab and said: 'O Commander of the Believers! There is a Verse in your Book which you recite; if it had been revealed to us Jews we would have taken that day as a festival.' He said: 'Which Verse is that?' He said: 'This day, I have perfected your religion for you, completed My favor upon you, and have chosen for you Islam as your religion.' 'Umar said: 'I know the place where it was revealed and the day on which it was revealed. It was revealed to the Messenger of Allah [SAW] at 'Arafat, on a Friday.'