[Machine] I heard Jundub ibn Sufyan say, "I witnessed the Eid al-Adha (sacrifice) with the Messenger of Allah ﷺ and then a man stood up and said, 'Indeed, some people have slaughtered before the prayer.' So, the Messenger of Allah ﷺ said, 'Whoever slaughtered before the prayer, let him make it as a charity, and whoever did not, let him slaughter in the name of Allah.' This is the wording of the hadith of Ibn Al-A'raabi and in the narration of As-Saffar. He learned that some people had already slaughtered and he said, 'Let him make up for his sacrifice.' And whoever didn't, let him slaughter in the name of Allah."  

سَمِعْتُ جُنْدُبَ بْنَ سُفْيَانَ ؓ يَقُولُ شَهِدْتُ الْأَضْحَى مَعَ رَسُولِ اللهِ ﷺ فَقَامَ رَجُلٌ فَقَالَ إِنَّ نَاسًا ذَبَحُوا قَبْلَ الصَّلَاةِ فَقَالَ مَنْ ذَبَحَ مِنْكُمْ قَبْلَ الصَّلَاةِ فَلْيُعِدْ ذَبِيحَتَهُ وَمَنْ لَا فَلْيَذْبَحْ عَلَى اسْمِ اللهِ لَفْظُ حَدِيثِ ابْنِ الْأَعْرَابِيِّ وَفِي رِوَايَةِ الصَّفَّارِ فَعَلِمَ أَنَّ نَاسًا وَقَالَ فَلْيُعِدْ أُضْحِيَّتَهُ وَمَنْ لَا يَكُنْ فَلْيَذْبَحْ عَلَى اسْمِ اللهِ