نَزَلَتْ عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم بِعَرَفَاتٍ فِي يَوْمِ جُمُعَةٍ .
Tariq b. Shihab reported that a Jew came to 'Umar and said:
Commander of the Faithful, there is a verse in your Book, which you recite. Had it been revealed in connection with the Jews, we would have taken it as the day of rejoicing. Thereupon he said: Which verse do you mean? He replied:" This day I have perfected your religion for you and I have completed My favours upon you and I have chosen al-Islam as religion for you." Umar said, I know the day when it was revealed and the place where it was revealed. It was revealed to Allah's Messenger (ﷺ) at 'Arafat on Friday.
A man from the Jews said to him: O Commander of the Believers, there is a verse in your Book; had it been sent down to us, the community of Jews, we would have taken this day as a festival. He said: Which verse? He said: {Today I have perfected your religion for you, completed My favor upon you…
إِنِّي لأَعْلَمُ حَيْثُ أُنْزِلَتْ، وَأَيْنَ أُنْزِلَتْ، وَأَيْنَ رَسُولُ اللَّهِ صلى الله عليه وسلم حِينَ أُنْزِلَتْ يَوْمَ عَرَفَةَ، وَإِنَّا وَاللَّهِ بِعَرَفَةَ ـ