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ibnmajah:3161 – Muḥammad b. Bashhār

It was narrated from Ibn ‘Umar that the Prophet ﷺ used to slaughter at the prayer place (of the ‘Eid congregation).  

ابن ماجة:٣١٦١ – حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ حَدَّثَنَا أَبُو بَكْرٍ الْحَنَفِيُّ حَدَّثَنَا أُسَامَةُ بْنُ زَيْدٍ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ

عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ يَذْبَحُ بِالْمُصَلَّى  

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Collected by Bukhārī
bukhari:982 – ʿAbdullāh b. Yūsuf > al-Layth > Kathīr b. Farqad > Nāfiʿ > Ibn ʿUmar

The Prophet ﷺ used to Nahr or slaughter sacrifices at the Musalla (on ʿId-ul-Adha).  

البخاري:٩٨٢ – حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ قَالَ حَدَّثَنَا اللَّيْثُ قَالَ حَدَّثَنِي كَثِيرُ بْنُ فَرْقَدٍ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ

أَنَّ النَّبِيَّ ﷺ كَانَ يَنْحَرُ أَوْ يَذْبَحُ بِالْمُصَلَّى