عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ رَضِيَ اللَّهُ عَنْهُمَا أَنَّ رَجُلًا ذَبَحَ قَبْلَ أَنْ يُصَلِّيَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ عَتُودًا جَذَعًا فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ لَا تُجْزِئُ عَنْ أَحَدٍ بَعْدَكَ وَنَهَى أَنْ يَذْبَحُوا حَتَّى يُصَلُّوا
It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) that a man slaughtered a kid goat before the Prophet Muhammad (peace and blessings be upon him) performed the prayer. The Messenger of Allah (peace and blessings be upon him) said regarding this: After you, such an act will not suffice for anyone. And the Prophet (peace and blessings be upon him) forbade the people from offering sacrifice before performing the prayer.