In the year of the conquest of Khaibar I went with Messenger of Allah ﷺ till we reached Sahba, a place near Khaibar, where Messenger of Allah ﷺ offered the ʿAsr prayer and asked for food. Nothing but saweeq was brought. He ordered it to be moistened with water. He and all of us ate it and the Prophet ﷺ got up for the evening prayer (Maghrib prayer), rinsed his mouth with water and we did the same, and he then prayed without repeating the ablution.  

أَنَّهُ خَرَجَ مَعَ رَسُولِ اللَّهِ ﷺ عَامَ خَيْبَرَ حَتَّى إِذَا كَانُوا بِالصَّهْبَاءِ وَهِيَ أَدْنَى خَيْبَرَ فَصَلَّى الْعَصْرَ ثُمَّ دَعَا بِالأَزْوَادِ فَلَمْ يُؤْتَ إِلاَّ بِالسَّوِيقِ فَأَمَرَ بِهِ فَثُرِّيَ فَأَكَلَ رَسُولُ اللَّهِ ﷺ وَأَكَلْنَا ثُمَّ قَامَ إِلَى الْمَغْرِبِ فَمَضْمَضَ وَمَضْمَضْنَا ثُمَّ صَلَّى وَلَمْ يَتَوَضَّأْ  

The Prophet ﷺ ate (a piece of) mutton from the shoulder region and then prayed without repeating the ablution.  

أَنَّ النَّبِيَّ ﷺ أَكَلَ عِنْدَهَا كَتِفًا ثُمَّ صَلَّى وَلَمْ يَتَوَضَّأْ