Sahih al-Bukhari 7400
Narrated Jundab:
That he witnessed the Prophet on the Day of Nahr. The Prophet offered prayer and then delivered a sermon saying, "Whoever slaughtered his sacrifice before offering prayer, should slaughter another animal in place of the first;
and whoever has not yet slaughtered any, should slaughter a sacrifice and mention Allah's Name while doing so."
حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنِ الأَسْوَدِ بْنِ قَيْسٍ، عَنْ جُنْدَبٍ، أَنَّهُ شَهِدَ النَّبِيَّ ﷺ يَوْمَ النَّحْرِ صَلَّى ثُمَّ خَطَبَ فَقَالَ
" مَنْ ذَبَحَ قَبْلَ أَنْ يُصَلِّيَ فَلْيَذْبَحْ مَكَانَهَا أُخْرَى، وَمَنْ لَمْ يَذْبَحْ فَلْيَذْبَحْ بِاسْمِ اللَّهِ ".
Classification
Sahih (Authentic)
References
Sahih al-Bukhari 7400
Sahih al-Bukhari Vol. 9, Book of Oneness of Allah, Hadith 497