حَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ الزُّهْرِيِّ، عَنْ جَعْفَرِ بْنِ عَمْرِو بْنِ أُمَيَّةَ الضَّمْرِيِّ، عَنْ أَبِيهِ، أَنَّهُ رَأَى النَّبِيَّ صلى الله عليه وسلم احْتَزَّ مِنْ كَتِفِ شَاةٍ فَأَكَلَ مِنْهَا ثُمَّ مَضَى إِلَى الصَّلاَةِ وَلَمْ يَتَوَضَّأْ ‏.‏ قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏ وَفِي الْبَابِ عَنِ الْمُغِيرَةِ بْنِ شُعْبَةَ ‏.‏

Narrated Ja'far bin 'Amr bin Umayyah Ad-Damri: From his father who said that he saw the Prophet (ﷺ) making incisions (with a knife) into a piece of a lamb shoulder which he ate from, then he went to perform Salat without performing Wudu'.

This Hadith is Hasan Sahih and there is something on this topic from Al-Mughirah bin Shu'bah.