On the day of Nahr the Prophet ﷺ offered the prayer and delivered the Khutba and then slaughtered the sacrifice and said, "Anybody who slaughtered (his sacrifice) before the prayer should slaughter another animal in lieu of it, and the one who has not yet slaughtered should slaughter the sacrifice mentioning Allah's name on it."  

صَلَّى النَّبِيُّ ﷺ يَوْمَ النَّحْرِ ثُمَّ خَطَبَ ثُمَّ ذَبَحَ فَقَالَ مَنْ ذَبَحَ قَبْلَ أَنْ يُصَلِّيَ فَلْيَذْبَحْ أُخْرَى مَكَانَهَا وَمَنْ لَمْ يَذْبَحْ فَلْيَذْبَحْ بِاسْمِ اللَّهِ  

An uncle of mine called Abu Burda, slaughtered his sacrifice before the ʿId prayer. So Messenger of Allah ﷺ said to him, "Your (slaughtered) sheep was just mutton (not a sacrifice)." Abu Burda said, "O Allah's Apostle! I have got a domestic kid goat." The Prophet ﷺ said, "Slaughter it (as a sacrifice) but it will not be permissible for anybody other than you" The Prophet ﷺ added, "Whoever slaughtered his sacrifice before the (ʿId) prayer, he only slaughtered for himself, and whoever slaughtered it after the prayer, he offered his sacrifice properly and followed the tradition of the Muslims."  

لَهُ رَسُولُ اللَّهِ ﷺ شَاتُكَ شَاةُ لَحْمٍ فَقَالَ يَا رَسُولَ اللَّهِ إِنَّ عِنْدِي دَاجِنًا جَذَعَةً مِنَ الْمَعَزِ قَالَ اذْبَحْهَا وَلَنْ تَصْلُحَ لِغَيْرِكَ ثُمَّ قَالَ مَنْ ذَبَحَ قَبْلَ الصَّلاَةِ فَإِنَّمَا يَذْبَحُ لِنَفْسِهِ وَمَنْ ذَبَحَ بَعْدَ الصَّلاَةِ فَقَدْ تَمَّ نُسُكُهُ وَأَصَابَ سُنَّةَ الْمُسْلِمِينَ  

The Prophet ﷺ said, "Whoever slaughtered (his sacrifice) before the ʿId 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.  

قَالَ النَّبِيُّ ﷺ مَنْ ذَبَحَ قَبْلَ الصَّلاَةِ فَلْيُعِدْ فَقَامَ رَجُلٌ فَقَالَ هَذَا يَوْمٌ يُشْتَهَى فِيهِ اللَّحْمُ وَذَكَرَ مِنْ جِيرَانِهِ فَكَأَنَّ النَّبِيَّ ﷺ صَدَّقَهُ قَالَ وَعِنْدِي جَذَعَةٌ أَحَبُّ إِلَىَّ مِنْ شَاتَىْ لَحْمٍ فَرَخَّصَ لَهُ النَّبِيُّ ﷺ فَلاَ أَدْرِي أَبَلَغَتِ الرُّخْصَةُ مَنْ سِوَاهُ أَمْ لاَ  

that the Prophet ﷺ had given him sheep to distribute among his companions and a male kid was left (after the distribution). When he informed the Prophet ﷺ of it, he said (to him), "Offer it as a sacrifice on your behalf."  

أَنَّ النَّبِيَّ ﷺ أَعْطَاهُ غَنَمًا يَقْسِمُهَا عَلَى صَحَابَتِهِ فَبَقِيَ عَتُودٌ فَذَكَرَهُ لِلنَّبِيِّ ﷺ فَقَالَ: «ضَحِّ بِهِ أَنْتَ۔»