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'.  

أَنَّهُ رَأَى النَّبِيَّ ﷺ احْتَزَّ مِنْ كَتِفِ شَاةٍ فَأَكَلَ مِنْهَا ثُمَّ مَضَى إِلَى الصَّلاَةِ وَلَمْ يَتَوَضَّأْ  

That he saw Messenger of Allah ﷺ cutting a piece of mutton from its shoulder part he was carrying in his hand. When he was called for prayer, he put it down and the knife with which he was cutting it. Then he stood up and offered the prayer without performing new ablution. (Using translation from Bukhārī 5462)  

أَخْبَرَهُ أَنَّهُ رَأَى رَسُولَ اللَّهِ ﷺ «يَحْتَزُّ مِنْ كَتِفِ شَاةٍ فِي يَدِهِ ثُمَّ دُعِيَ إِلَى الصَّلَاةِ فَأَلْقَى السِّكِّينَ الَّتِي كَانَ يَحْتَزُّ بِهَا ثُمَّ قَامَ فَصَلَّى وَلَمْ يَتَوَضَّأْ»  

I saw Messenger of Allah ﷺ cutting part of the shoulder of mutton with a knife. He ate of it and then was called for prayer whereupon he got up and put down the knife and offered the prayer without performing new ablution. (Using translation from Bukhārī 5422)  

«رَأَيْتُ رَسُولَ اللَّهِ ﷺ يَحْتَزُّ مِنْ كَتِفِ شَاةٍ فَيَأْكُلُ مِنْهَا فَدُعِيَ إِلَى الصَّلَاةِ فَقَامَ فَطَرَحَ السِّكِّينَ فَصَلَّى وَلَمْ يَتَوَضَّأْ»  

[Machine] "He saw the Messenger of Allah ﷺ suffering from a headache, so he approached the muezzin to call for prayer, and he brought a piece of cloth and a knife from his hand and did not perform ablution."  

«أَنَّهُ رَأَى رَسُولَ اللَّهِ ﷺ يَحْتَزُّ مِنْ عَرْقٍ يَأْكُلُ فَأَتَى الْمُؤَذِّنُ بِالصَّلَاةِ فَأَلْقَى الْعَرْقَ وَالسِّكِّينَ مِنْ يَدِهِ وَلَمْ يَتَوَضَّأْ»  

[Machine] She saw the Messenger of Allah ﷺ eating a shoulder and then he stood up for prayer without performing ablution.  

أَنَّهَا «رَأَتْ رَسُولَ اللهِ ﷺ أَكَلَ كَتِفًا ثُمَّ قَامَ إِلَى الصَّلَاةِ وَلَمْ يَتَوَضَّأْ»