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  

I witnessed the Prophet ﷺ on the Day of Nahr. He said, "Whoever slaughtered the sacrifice before offering the ʿId prayer, should slaughter another sacrifice in its place; and whoever has not slaughtered their sacrifice yet, should slaughter now."  

شَهِدْتُ النَّبِيَّ ﷺ يَوْمَ النَّحْرِ فَقَالَ مَنْ ذَبَحَ قَبْلَ أَنْ يُصَلِّيَ فَلْيُعِدْ مَكَانَهَا أُخْرَى وَمَنْ لَمْ يَذْبَحْ فَلْيَذْبَحْ  

That he witnessed the Prophet ﷺ on the Day of Nahr. The Prophet ﷺ 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."  

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

I was with Messenger of Allah ﷺ (on the occasion) of 'Id al-Adha. After he had completed the prayer with people, he found that the goats had been slaughtered, whereupon he said: He who slaughtered sacrificial animal before the prayer should slaughter a goat (again) in its stead and he who has not slaughtered he should slaughter it by reciting the name of Allah.  

شَهِدْتُ الأَضْحَى مَعَ رَسُولِ اللَّهِ ﷺ فَلَمَّا قَضَى صَلاَتَهُ بِالنَّاسِ نَظَرَ إِلَى غَنَمٍ قَدْ ذُبِحَتْ فَقَالَ مَنْ ذَبَحَ قَبْلَ الصَّلاَةِ فَلْيَذْبَحْ شَاةً مَكَانَهَا وَمَنْ لَمْ يَكُنْ ذَبَحَ فَلْيَذْبَحْ عَلَى اسْمِ اللَّهِ  

I saw Messenger of Allah ﷺ observing ('Id) prayer on the Day of Sacrifice (10th of Dhu'l-Hijja) and then delivering a sermon and he said: He who sacrificed the (animal) before offering ('Id) prayer, he should offer again in its stead, and he who did not sacrifice the animal should slaughter it by reciting the name of Allah.  

شَهِدْتُ رَسُولَ اللَّهِ ﷺ صَلَّى يَوْمَ أَضْحًى ثُمَّ خَطَبَ فَقَالَ مَنْ كَانَ ذَبَحَ قَبْلَ أَنْ يُصَلِّيَ فَلْيُعِدْ مَكَانَهَا وَمَنْ لَمْ يَكُنْ ذَبَحَ فَلْيَذْبَحْ بِاسْمِ اللَّهِ  

“I was present on Adha day with the Messenger of Allah ﷺ, and some people slaughtered before the prayer. The Prophet ﷺ said: ‘Whoever among you has slaughtered before the prayer, let him repeat his sacrifice, and whoever has not, let him offer his sacrifice in the Name of Allah.’”  

أَنَّهُ سَمِعَهُ يَقُولُ شَهِدْتُ الأَضْحَى مَعَ رَسُولِ اللَّهِ ﷺ فَذَبَحَ أُنَاسٌ قَبْلَ الصَّلاَةِ فَقَالَ النَّبِيُّ ﷺ مَنْ كَانَ ذَبَحَ مِنْكُمْ قَبْلَ الصَّلاَةِ فَلْيُعِدْ أُضْحِيَّتَهُ وَمَنْ لاَ فَلْيَذْبَحْ عَلَى اسْمِ اللَّهِ  

I saw Messenger of Allah ﷺ observing ('Id) prayer on the Day of Sacrifice (10th of Dhu'l-Hijja) and then delivering a sermon and he said: He who sacrificed the (animal) before offering ('Id) prayer, he should offer again in its stead, and he who did not sacrifice the animal should slaughter it by reciting the name of Allah. (Using translation from Muslim 1960d)   

أَنَّهُ شَهِدَ رَسُولَ اللهِ ﷺ صَلَّى ثُمَّ خَطَبَ فَقَالَ مَنْ كَانَ ذَبَحَ قَبْلَ أَنْ يُصَلِّيَ فَلْيُعِدْ مَكَانَهَا أُخْرَى وَقَالَ مَرَّةً أُخْرَى فَلْيَذْبَحْ وَمَنْ كَانَ لَمْ يَذْبَحْ فَلْيَذْبَحْ بِاسْمِاللهِ  

"We slaughtered the sacrifice with the Messenger of Allah on day, and the people slaughtered their sacrifices before the prayer. When he finished (the prayer) the Prophet saw that they had slaughtered their sacrifices before the prayer. He said: "Whoever slaughtered his sacrifice before the prayer, let him slaughter another in its place, and whoever did not slaughter his sacrifice until we had prayed, let him slaughter it in the name of Allah, The Mighty and Sublime," (Sahih ) (Using translation from Nasāʾī 4398)   

ضَحَّيْنَا مَعَ رَسُولِ اللَّهِ ﷺ فَإِذَا نَاسٌ ذَبَحُوا ضَحَايَاهُمْ قَبْلَ الصَّلَاةِ فَلَمَّا انْصَرَفَ رَآهُمُ النَّبِيُّ ﷺ قَدْ ذَبَحُوا قَبْلَ الصَّلَاةِ فَقَالَ «مَنْ ذَبَحَ قَبْلَ الصَّلَاةِ فَلْيَذْبَحْ مَكَانَهَا أُخْرَى وَمَنْ لَمْ يَذْبَحْ حَتَّى صَلَّيْنَا فَلْيَذْبَحْ عَلَى اسْمِ اللَّهِ»  

I was with Messenger of Allah ﷺ (on the occasion) of 'Id al-Adha. After he had completed the prayer with people, he found that the goats had been slaughtered, whereupon he said: He who slaughtered sacrificial animal before the prayer should slaughter a goat (again) in its stead and he who has not slaughtered he should slaughter it by reciting the name of Allah. (Using translation from Muslim 1960b)   

شَهِدْتُ أَضْحًى مَعَ رَسُولِ اللهِ ﷺ فَصَلَّى بِالنَّاسِ فَلَمَّا قَضَى رَسُولُ اللهِ ﷺ الصَّلَاةَ رَأَى غَنَمًا قَدْ ذُبِحَتْ فَقَالَ «مَنْ كَانَ ذَبَحَ قَبْلَ الصَّلَاةِ فَلْيَذْبَحْ شَاةٍ مَكَانَهَا وَمَنْ لَمْ يَكُنْ ذَبَحَ فَلْيَذْبَحْ بِاسْمِ اللهِ»  

[Machine] I witnessed the Eid sacrifice with the Prophet ﷺ , and he saw some people who had slaughtered their animals before the prayer. He said, "Whoever has already slaughtered their animal before the prayer should repeat the sacrifice, and whoever has not yet slaughtered should do so in the name of Allah."  

شَهِدْتُ الْأَضْحَى مَعَ النَّبِيِّ ﷺ فَرَأَى نَاسًا قَدْ ذَبَحُوا قَبْلَ الصَّلَاةِ فَقَالَ «مَنْ كَانَ ذَبَحَ قَبْلَ الصَّلَاةِ فَلْيُعِدِ الذَّبْحَ وَمَنْ لَمْ يَكُنْ ذَبَحَ فَلْيَذْبَحْ عَلَى اسْمِ اللهِ»  

[Machine] Junadab heard someone say, "I witnessed the Prophet ﷺ delivering a sermon on the day of Eid al-Adha. He said, 'Whoever slaughtered his sacrifice before the prayer should slaughter another in its place, and whoever has not yet slaughtered should slaughter one in the name of Allah.'" This narration is found in Sahih Hadith of Shu'bah.  

سَمِعَ جُنْدُبًا يَقُولُ شَهِدْتُ النَّبِيَّ ﷺ يَخْطُبُ يَوْمَ أَضْحَى فَقَالَ مَنْ كَانَ ذَبَحَ مِنْكُمْ قَبْلَ الصَّلَاةِ فَلْيُعِدْ مَكَانَ ذَبِيحَتِهِ أُخْرَى وَمَنْ لَمْ يَكُنْ ذَبَحَ فَلْيَذْبَحْ بِاسْمِ اللهِ أَخْرَجَاهُ فِي الصَّحِيحِ مِنْ حَدِيثِ شُعْبَةَ  

"مَنْ كان ذبَحَ أُضْحِيَتهُ قبْل أَنْ يُصَلِّيَ، فليَذْبَحْ مَكانَها أُخْرَى، وَمَنْ لمْ يَكُنْ ذبَحَ فليَذْبَحْ بِاسْمِ اللهِ".