Language:
كتاب العيدين
13
The Two Festivals (Eids)
(5)
Chapter: Eating on the day of Nahr (10th of Dhul-Hijjah)
(5)
باب الأَكْلِ يَوْمَ النَّحْرِ
Sahih al-Bukhari 954

Narrated Anas:

The Prophet (ﷺ) said, "Whoever slaughtered (his sacrifice) before the `Id prayer, should slaughter again." A man stood up and said, "This is the day on which one has desire for meat," and he mentioned something about his neighbors. It seemed that the Prophet (ﷺ) I believed him. Then the same man added, "I have a young she-goat which is dearer to me than the meat of two sheep." The Prophet (ﷺ) permitted him to slaughter it as a sacrifice. I do not know whether that permission was valid only for him or for others as well.

حَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا إِسْمَاعِيلُ، عَنْ أَيُّوبَ، عَنْ مُحَمَّدٍ، عَنْ أَنَسٍ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم ‏ "‏ مَنْ ذَبَحَ قَبْلَ الصَّلاَةِ فَلْيُعِدْ ‏"‏‏.‏ فَقَامَ رَجُلٌ فَقَالَ هَذَا يَوْمٌ يُشْتَهَى فِيهِ اللَّحْمُ‏.‏ وَذَكَرَ مِنْ جِيرَانِهِ فَكَأَنَّ النَّبِيَّ صلى الله عليه وسلم صَدَّقَهُ، قَالَ وَعِنْدِي جَذَعَةٌ أَحَبُّ إِلَىَّ مِنْ شَاتَىْ لَحْمٍ، فَرَخَّصَ لَهُ النَّبِيُّ صلى الله عليه وسلم فَلاَ أَدْرِي أَبَلَغَتِ الرُّخْصَةُ مَنْ سِوَاهُ أَمْ لاَ‏.‏
Reference : Sahih al-Bukhari 954
In-book reference : Book 13, Hadith 6
USC-MSA web (English) reference : Vol. 2, Book 15, Hadith 74
  (deprecated numbering scheme)