Sahih Muslim Book - 54, Hadith - 7526

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِى شَيْبَةَ وَأَبُو كُرَيْبٍ - وَاللَّفْظُ لأَبِى بَكْرٍ - قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ إِدْرِيسَ عَنْ أَبِيهِ عَنْ قَيْسِ بْنِ مُسْلِمٍ عَنْ طَارِقِ بْنِ شِهَابٍ قَالَ قَالَتِ الْيَهُودُ لِعُمَرَ لَوْ عَلَيْنَا مَعْشَرَ يَهُودَ نَزَلَتْ هَذِهِ الآيَةُ (الْيَوْمَ أَكْمَلْتُ لَكُمْ دِينَكُمْ وَأَتْمَمْتُ عَلَيْكُمْ نِعْمَتِى وَرَضِيتُ لَكُمُ الإِسْلاَمَ دِينًا) نَعْلَمُ الْيَوْمَ الَّذِى أُنْزِلَتْ فِيهِ لاَتَّخَذْنَا ذَلِكَ الْيَوْمَ عِيدًا. قَالَ فَقَالَ عُمَرُ فَقَدْ عَلِمْتُ الْيَوْمَ الَّذِى أُنْزِلَتْ فِيهِ وَالسَّاعَةَ وَأَيْنَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- حِينَ نَزَلَتْ نَزَلَتْ لَيْلَةَ جَمْعٍ وَنَحْنُ مَعَ رَسُولِ اللَّهِ -صلى الله عليه وسلم- بِعَرَفَاتٍ.

It was narrated that Tariq bin Shihab said: "The Jews said to 'Umar: 'If this Verse - "...This day, I have perfected your religion for you, completed My Favor upon you, and have chosen for you Islam as your religion..." had been revealed to us Jews, we would have taken that day as a (day of) festival.' 'Umar said: 'I know the day on which it was revealed, and the hour, and where the Messenger of Allah (s.a.w) was when it was revealed. It was revealed on the night of Friday, when we were with the Messenger of Allah (s.a.w) in 'Arafat."'