that he saw the Prophet ﷺ holding a shoulder piece of mutton in his hand and cutting part of it with a knife. Then he was called for the prayer whereupon he put down the shoulder piece and the knife with which he was cutting it, and then stood for prayer without performing ablution again. (Using translation from Bukhārī 5408)  

أَخْبَرَهُ أَنَّهُ رَأَى رَسُولَ اللهِ ﷺ يَحْتَزُّ مِنْ كَتِفِ شَاةٍ فِي يَدِهِ فَدُعِيَ إِلَى الصَّلَاةِ فَأَلْقَاهَا وَالسِّكِّينَ الَّتِي كَانَ يَحْتَزُّ بِهَا فَقَامَ فَصَلَّى وَلَمْ يَتَوَضَّأْ ﷺ