In the year of the conquest of Khaibar I went with Messenger of Allah ﷺ till we reached As-Sahba' where Messenger of Allah ﷺ led the ʿAsr prayer and asked for the food. Nothing but saweeq was brought and we ate it and drank (water). The Prophet ﷺ got up for the (Maghrib) Prayer, rinsed his mouth with water and then led the prayer without repeating the ablution.  

خَرَجْنَا مَعَ رَسُولِ اللَّهِ ﷺ عَامَ خَيْبَرَ حَتَّى إِذَا كُنَّا بِالصَّهْبَاءِ صَلَّى لَنَا رَسُولُ اللَّهِ ﷺ الْعَصْرَ فَلَمَّا صَلَّى دَعَا بِالأَطْعِمَةِ فَلَمْ يُؤْتَ إِلاَّ بِالسَّوِيقِ فَأَكَلْنَا وَشَرِبْنَا ثُمَّ قَامَ النَّبِيُّ ﷺ إِلَى الْمَغْرِبِ فَمَضْمَضَ ثُمَّ صَلَّى لَنَا الْمَغْرِبَ وَلَمْ يَتَوَضَّأْ  

We went out with Messenger of Allah ﷺ to Khaibar, and when we reached As-Sahba', the Prophet ﷺ asked for food, and he was offered nothing but Sawiq. We ate, and then Messenger of Allah ﷺ stood up for the prayer. He rinsed his mouth with water, and we too, rinsed our mouths.  

خَرَجْنَا مَعَ رَسُولِ اللَّهِ ﷺ إِلَى خَيْبَرَ فَلَمَّا كُنَّا بِالصَّهْبَاءِ دَعَا بِطَعَامٍ فَمَا أُتِيَ إِلاَّ بِسَوِيقٍ فَأَكَلْنَا فَقَامَ إِلَى الصَّلاَةِ فَتَمَضْمَضَ وَمَضْمَضْنَا  

[Machine] We went out with the Messenger of Allah ﷺ in the year of Khaybar until we reached As-Sahba. He prayed Asr (afternoon prayer) and called for food, but only Sawiq (a type of food made from toasted flour) was presented to him. So they ate and drank from it. Then he got up for Maghrib (evening prayer) and rinsed his mouth, and we also rinsed our mouths with him without touching water.  

خَرَجْنَا مَعَ رَسُولِ اللهِ ﷺ عَامَ خَيْبَرَ حَتَّى إِذَا كُنَّا بِالصَّهْبَاءِ وَصَلَّى الْعَصْرَ دَعَا بِالْأَطْعِمَةِ فَمَا أُتِيَ إِلَّا بِسَوِيقٍ فَأَكَلُوا وَشَرِبُوا مِنْهُ ثُمَّ قَامَ إِلَى الْمَغْرِبِ فَمَضْمَضَ وَمَضْمَضْنَا مَعَهُ وَمَا مَسَّ مَاءً