Sahih Muslim 5069
صحيح مسلم#5069Sahihوَحَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا خَالِدُ بْنُ عَبْدِ اللَّهِ، عَنْ مُطَرِّفٍ، عَنْ عَامِرٍ، عَنِ الْبَرَاءِ، قَالَ ضَحَّى خَالِي أَبُو بُرْدَةَ قَبْلَ الصَّلاَةِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " تِلْكَ شَاةُ لَحْمٍ " . فَقَالَ يَا رَسُولَ اللَّهِ إِنَّ عِنْدِي جَذَعَةً مِنَ الْمَعْزِ فَقَالَ " ضَحِّ بِهَا وَلاَ تَصْلُحُ لِغَيْرِكَ " . ثُمَّ قَالَ " مَنْ ضَحَّى قَبْلَ الصَّلاَةِ فَإِنَّمَا ذَبَحَ لِنَفْسِهِ وَمَنْ ذَبَحَ بَعْدَ الصَّلاَةِ فَقَدْ تَمَّ نُسُكُهُ وَأَصَابَ سُنَّةَ الْمُسْلِمِينَ " .
Al-Bara' reported:My maternal uncle Abu Burda sacrificed his animal before ('Id) prayer. Thereupon Allah's Messenger (ﷺ) said: That is a goat (slaughtered for the sake of) flesh (and not as a sacrifice on the day of Adha). He said: I have a lamb of six months. Thereupon he said: Offer it as a sacrifice, but it will not justify for anyone except you, and then said: He who sacrificed (the animal) before ('Id) prayer, he in fact slaughtered it for his own self, and he who slaughtered after prayer, his ritual of sacrifice became complete and he in fact observed the religious practice of the Muslims
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 35:6