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suyuti:15201a
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السيوطي:١٥٢٠١a

"صَوْمُ يَوم عَرَفَة صَوْمُ سَنَة".  

ابن أبي الدنيا في عشر ذي الحجة عن ابن عمر

See similar narrations below:

Collected by Nasāʾī's Kubrá
nasai-kubra:2837ʿAmr b. ʿAlī > ʿAbd al-Raḥman > Sufyān And Shuʿbah > ʿAmr b. Dīnār > ʿAṭāʾ > ʿUbayd b. ʿUmayr

[Machine] That Omar "used to prohibit fasting on the day of Arafah."  

الكبرى للنسائي:٢٨٣٧أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ قَالَ حَدَّثَنَا سُفْيَانُ وَشُعْبَةُ عَنْ عَمْرِو بْنِ دِينَارٍ عَنْ عَطَاءٍ عَنْ عُبَيْدِ بْنِ عُمَيْرٍ

أَنَّ عُمَرَ «كَانَ يَنْهَى عَنْ صَوْمِ يَوْمِ عَرَفَةَ»  

nasai-kubra:2845Isḥāq b. Manṣūr > ʿAbd al-Raḥman > Ḥawshb And Shuʿbah > ʿAmr b. Dīnār > ʿAṭāʾ > ʿUbayd b. ʿUmayr

[Machine] Omar used to forbid fasting on the Day of Arafah.  

الكبرى للنسائي:٢٨٤٥أَخْبَرَنَا إِسْحَاقُ بْنُ مَنْصُورٍ قَالَ أَخْبَرَنَا عَبْدُ الرَّحْمَنِ قَالَ حَدَّثَنَا حَوْشبٌ وَشُعْبَةُ عَنْ عَمْرِو بْنِ دِينَارٍ عَنْ عَطَاءٍ عَنْ عُبَيْدِ بْنِ عُمَيْرٍ قَالَ

«كَانَ عُمَرُ يَنْهَى عَنْ صَوْمِ يَوْمِ عَرَفَةَ»