It was narrated from Anas bin Malik that a man slaughtered on the Day of Sacrifice, (meaning) before the ‘Eid prayer, and the Prophet ﷺ ordered him to do it again.  

أَنَّ رَجُلاً ذَبَحَ يَوْمَ النَّحْرِ قَبْلَ الصَّلاَةِ فَأَمَرَهُ النَّبِيُّ ﷺ أَنْ يُعِيدَ  

“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  

“Repeat your sacrifice.”  

أَنَّهُ ذَبَحَ قَبْلَ الصَّلاَةِ فَذَكَرَهُ لِلنَّبِيِّ ﷺ فَقَالَ: «أَعِدْ أُضْحِيَّتَكَ۔»  

“The Messenger of Allah ﷺ passed by one of the houses of the Ansar and noticed the smell of a cooking pot. He said: ‘Who is this who has slaughtered?’ A man from among us came out and said: ‘It is me, O Messenger of Allah, I slaughtered before the prayer so that I could feed my family and neighbors.’ He commanded him to repeat it. He said: ‘No, by the One besides Whom there is none worthy of worship, I do not have anything but a one-year-old sheep or a lamb.’ He ﷺ said: ‘Sacrifice it, but a one-year-old sheep will not do for anyone after you.’”  

مَرَّ رَسُولُ اللَّهِ ﷺ بِدَارٍ مِنْ دُورِ الأَنْصَارِ فَوَجَدَ رِيحَ قُتَارٍ فَقَالَ مَنْ هَذَا الَّذِي ذَبَحَ فَخَرَجَ إِلَيْهِ رَجُلٌ مِنَّا فَقَالَ أَنَا يَا رَسُولَ اللَّهِ ذَبَحْتُ قَبْلَ أَنْ أُصَلِّيَ لأُطْعِمَ أَهْلِي وَجِيرَانِي فَأَمَرَهُ أَنْ يُعِيدَ فَقَالَ لاَ وَاللَّهِ الَّذِي لاَ إِلَهَ إِلاَّ هُوَ مَا عِنْدِي إِلاَّ جَذَعٌ أَوْ حَمَلٌ مِنَ الضَّأْنِ قَالَ اذْبَحْهَا وَلَنْ تُجْزِئَ جَذَعَةٌ عَنْ أَحَدٍ بَعْدَكَ